When I was a child, for a hobby I assembled model cars, planes and ships.
My mother gave me some really cool sewing thread, black and thick. Made nice looking rigging on my ships.
When I was around 9 years old, some friends and me built our first boat out of wood scrapes we get from construction sites, they did give it!
I have built a few boats since from canoes to small sailboats, stitch-n-glue type stuff and of course, the "Corky" an inner-tube day sailor.
This is my hobby, started with small plastic models, learned to read instructions, and go from there.
So, yep, I do-it-myself, it is fun for me, it is my hobby.
I am starting a new/used boat now. Hope to finish by Spring.