Does it bother you to hear "Thank you for your service!"?

It doesn't bother me. I say it to veterans, active duty, reservists...basically, anyone who is identifiable as having served or is currently serving. That being said, the way I use it doesn't imply that anyone is done...at least I don't think of it that way.
BTW, I also say it to our firefighters and policemen, who (it seems to me) risk their lives everyday out here keeping us safe at home.
I fought in Iraq, I served in Bosnia, I did a tour in Kuwait, I've been to Hungary and Croatia. In no way do I think that our jobs, as soldiers is...or ever has been...safe. But, I think that the boys in blue have a much more dangerous job catching drug dealers, murderers, rapists...and sometimes not knowing who is even in a car that was just stopped running a red light or speeding....and they do it everyday, not just when sent overseas. I often thought that, at least we (as soldiers) new who the enemy was (in enemy uniforms). Yes, I know, that wasn't always the case...many times the enemy would be in civilian clothes, driving a Mazda truck or other blowing up a checkpoint or trying to gun down a convoy. But, while I was there, I had no qualms about shooting a civilian-looking person, who I perceived might be a threat (I tried to keep from shooting them if I could, but...). As a police officer it seems that there is in no way a line drawn in the same manner as it is drawn between (American Soldier, and not American Soldier).
But, I digress. My point is that I feel that it says "You're done." when saying "Thank you for your service." To me, it is just a way of saying, "Thank you. I appreciate all the hard work that you do and have done, and the life you laid on the line for our nation." But, I guess it is all in the way that it is said, when you are the one hearing it.

I agree. Just because we aren't still in doesn't mean we stop.

When I was growing up I watched the Vietnam war on the TV, and I saw vets get neglected and mistreated, so I would have to say NO, it does not bother me at all. I really appreciate that someone goes out of their way to actually recognize my service.

I see this as not something actually pointed at me specifically but to the Uniform. Thus, by replying or accepting graciously, I am allowing the person to give their respect to the Uniform. I never count it as something that I did personally. It is a greater presence that they are thanking.

The other side of this is what is the response to "Thank you for your service"... I make it a habit to respond with "You are welcome, It was my honor to Serve this Country." Because that is exactly how I feel. But the First time someone said it I hesitated at what to say, you have to think about it and so having a prepared response is best. It's awkward because you don't think about it as being something to reply to. Just MHO.

Must admit - the first time I heard it, I felt kind of like the wait-staff at a restaurant - maybe it just starts to grow on you after awhile. However, a simple "Thank you" or "Thank you for being there" would work well for me and am pretty sure it'd be suitable for those that HAD to be there during the Viet Nam era.

I did not serve with some grand idea, for me it was Plan C after A and B failed. I was more surprised than anyone that I loved it as much as I did. In the end, I served because I really liked my job and the life I had, even the crappy times gave me fond memories. But I am uncomfortable when folks give me the canned "Thank you, for your service.". It is unnecessary and now trite.

Yes, it does bother me, because the first thing in my mind is all of those men and women who have given the ultimate sacrifice and will never hear those words .. Thank you for your service,

I was just doing my job

well, sometimes it's hard to tell whether it's has feeling behind it when people say it or if it's just something someone says to keep you moving along.

It is nice to receive an acknowledgment for service. I remember the welcome my uncle received coming back from Nam, not a nice welcome and the no big deal attitude or scorn that I received when I ETS'ed in 81. It is surprising but it is nice to hear.

No it doesn't bother me at all I like to here it because it reminds me of my service and the good times I had there

I never look at it in that manner, Most civilians will never know or understand what it takes to do the job "That we have done" So most people say it I think as an honor from them to us, There may be those who don't mean it... But i'm sure you can see those people a Mile away... Its hard to walk away from the Life... Because I know for me... It wasn't a Job but a Lifestyle .... Not everyone can do this....