@icedcoffees I wouldn't presume to try and guess as to your own age, but the reason I made the bus pass comment is that all too often I see people making ridiculous generalisations on here about 'older' people and in some cases people really do talk out of the their arses and make quite offensive assumptions.
I'm 32, so not far off the 37 you referred to as "not bus pass age", lol.
I don't think 37 is old but it is a fair bit oldER than 22. And while at OP's current age it may not seem to be a big deal, as they both get older, the age gap could will only get more and more obvious.
Just from my personal view, I wouldn't want to still have 15+ years left to work while my DH was home all day long enjoying his retirement. I wouldn't want to be only just retiring when my husband was in his eighties.
Unfortunately, age means change, whether we like it or not. As I said it in one of my earlier posts - my dad is nearly 70 and I can see such a difference in him compared to when he retired (early) at sixty. He's super active for his age but you can still see the changes, both physically and in his mindset too.
If, when your partner is in their seventies, you're only in your early fifties, that can start to cause problems. Not for everyone, of course, but it's worth thinking about imo.