yes.
We started ttc when ds was two, and as it had taken over a year to conceive him I was well aware that it might take some time. However after a year nothing had happened so we went for some tests and it transpired that dh had a low sperm count, although he was never keen to follow up these tests iyswim.
I didn't want to go through medical intervention either as I think that it is a bit of a rollercoster which is very difficult to get off once you're there.
So, after about two years of actively ttc we sort of stopped actively trying on the basis we knew it was very unlikely to happen. But we didn't use contraceptives either and tbh I think that while a part of you says that you know it's not going to happen, you do still wonder every month, especially if you're a bit late/feel a bit nausious/know you did it on the right day etc.
My thinking then was that although I "knew" it wouldn't happen, I would still be happy if it did.
Periodically I wondered if I was pregnant/wondered if deciding to not go through any treatments would leave me full of regret in the future etc, but I was never of the obsessively wanting to get pg/not being able to see other peoples' babies type. I firmly believe that we should be grateful for the things we do have rather than regret the things we don't/can't have.
Anyway about eighteen months ago I went away for a week and while I was away I did a lot of re-evaluation of my life, about what I wanted/where I was going etc, and I decided that I wanted to go back to work etc (this still hasn't happened but is down to circs rather than anything else), but a part of that also made me realize that actually I am now past the point of wanting another child - that that part of me had passed because the age gap would be too big/I now wanted my life back.
And since that point we have gone back to actively not ttc i.e. using contraception again. Because I don't want to end up one of those women that just blythely accepted it "couldn't" happen, and end up pregnant into my 40's when I have a teenager. 
My ds is nine now and I know that a nten year age gap would be too big, and I don't want to go back to the stage of night-wakings and dirty nappies...
And yes, I have totally come to terms with that - I believe this is how it was meant to be.
I think my dh is less happy about it, but he does also realize now that the age gap would be too big.