When I was in my early 30s, I commented to a co-worker that my husband and I were planning to meet with a financial planner. The co-worker was a little younger than we were and said something like, "Just remember that you're smarter than the financial planner." My intelligence isn't something people comment about much, so the comment caught me off-guard. I went home and repeated it to my husband.
Since then (25 years ago) I've met some pretty smart financial planners, but my co-worker's comment launched a string of events that resulted in my husband and I continuing to manage our own finances and investments. Nothing we do is terribly sophisticated, but nobody understands our goals better than we do, and nobody understands our finances and investment choices better than we do. And, at least so far, it seems to be working well for us.