We do not keep our money separate. Our investment funds however are all my savings as he works for the state so his entire tax deferral is required to be there-hence we know who earned what savings. He wants BIG stuff out of retirement that will take a LOT of money so is willing to work longer to get it. Plus he made minimum wage until 1993 so he's a bit behind his investment goals.
Once he retires we will go through money very quickly for about 10 years (as long as we are physically able to walk/hike for hours. 7 of our grandparents all made it to or past 88 (my GMs were each 94). We are just 58 and have to plan for a 30y retirement minimum or 94 so we don't become wards of the state.
Also, he is thoroughly enjoying his work. He is in IT. In April he became chief Security officer for his office. He is loving it and is getting a lot of support for education and certifications that are beneficial.
If he were unhappy at work, we would regroup, reevaluate, consult with our financial adviser about projected possibilities and move forward. It is entirely up to him whether we 'downgrade' the retirement intentions.