Building your own fly rod questions

I ran across this on the internet and wondered what the advantages and
disadvantages are to building your own fly rod. Is this something the
average fisherman should stay away from (too difficult)? Anyone here
fish rods they built themselves? What are some recommended resources
for this (books, web sites etc.).

I'm a guy who is a hopeless DIY person. It's a sickness :-( and an
ongoing source of ribbing from my teenage children when I try to build
everything from our radio's to our furniture. They do think it's cool
that I tie my own flies though. Their friends tell them they're not
sure if I'm a madman or a genius (definitely a madman IMHO).

Thanks in advance for the info.