Has OLD made you regret leaving your marriage?

For context I'm a 45m in a 25 year relationship, married 18 years to my 43F wife. In August a lot happened that led to us seriously discussing divorce. The consensus is we are going to do counseling which starts in a few weeks, but the invasive thoughts take hold and now I'm here hoping to learn the reality of life after marriage.

Core issues for us is a lack of common interests, codependent behavior, struggles with mental health, and some resentment after years of ignoring each other's needs/feelings. I believe most of these can be worked through in therapy, but the lack of common interests really is a big deal for me. I've spent the last 20 years not doing the things I love most while we just do whatever she wants to do. So in creeps the little devil on my shoulder, "you know there are women that like to hike and love to be on the lake or in a river, right?" "Oh there are so many out there that would be a better connection for you." "Even if you guys can compromise to do more things you like, she will always hate doing them!"

Anyone else experience these intrusive thoughts? More importantly, do you regret going through with the divorce now that you have been out for a while? I should add, aside from any financial impact the divorce might have had due to child support or maintenance payments, how has your experience away from the marriage been compared to what you were hoping for?