I know a lady who in her late twenties married a widower (she had also known his wife) 42 years older than she was. They lived together some 16-18 years at which point he died at an age approaching 90. For the last several years he was on the verge of being bedridden and she was the carer. We have talked about her experience and she talks of it as having been extremely testing. What is striking is that she does not speak of him with affection but more with some resentment. I have not asked if she would do it again, but something tells me the answer would be an emphatic no. It is noticeable that she now comes over as an old lady rather than aged forty or so. Her in-laws mostly disapproved and I have the impression some of that was centred on an interpretation/assumption of her trying to get an easy meal ticket. However, although I don't know for certain, I believe it was he who had the initiative and was securing himself an energetic carer in good time (he was fairly healthy initially). You give the impression of realising all about these aspects while outwardly maintaining a position of "we are in love". It is not for anyone to dictate your life, not even your chosen partner of the moment. Also, it is not really anyone's business what you decide, so long as it does not adversely affect anyone else. Oh, the woman I was describing lost nearly all her friends of her age and she and her husband moved in circles of the elderly/aged.