I know absolutely nothing about rod building. If I had the time, I might want to try. Even so, there would be a steep learning curve involved. I expect my first rod, even if it looked good, would be the crappiest casting rod ever made.
How would I know that without even trying? Because like everything else, becoming a good rod builder comes with experience and putting your time in. It can't be learned overnight.
There's nothing wrong with a guy wanting to learn how to build how own rod. There's a sense of satisfaction that comes with doing something on your own that is indescribable unless you've actually done it.