I'm in Australia, and I can't speak about all doctors, but I'm pretty sure my doctor won't pressure me. I'm still only 55, but she has told me about another patient she has who is in her 70s and who stays on HRT because "it's good for her libido"... Go granny!!...lol...
However, while I'd really like to stay on HRT for the rest of my life, it will really depend on how the progesterone side of things go. Prog and I don't get on terribly well, and I'm not keen on having a hyster, so if I find as I get older that I can do without HRT, I will probably stop it, so I can avoid the prog drama.