I'm so sorry op. It's awful when life doesn't pan out the way you intended / thought.
I was there after 30 years of marriage with grandchildren as well. Thankfully he left eventually and I got my freedom back and it was wonderful.
' everyday is a challenge '
Well you can do without that op.
If things are a challenge right now...what if he gets sick, has a stroke...how would that be. Would you just fall into the role of nurse or would you wish you had put some distance between yourselves when you had the chance?
I say that because mine got a particularly nasty cancer after he'd been gone 5 years and was I relieved I didn't have to go through that...his ow did.
You don't want his miserable shadow towering over you, do you? Grumpy, critical...blaming you for everything that goes wrong.
I was lucky enough to meet someone else and now 8 years on am having a blast. Couldn't be happier. Got married when I was 63.
I much prefer that to living with a miserable lump who hated my very existence.
You never know what you can afford till you look.