I used to be that way myself... with everything... car repairs, electrical repairs, home repairs.. .you name it, I did it.
These days, however... I just don't have the energy... nor, sadly, the ambition. HOWEVER... I have considered the countertop remodel by doing it myself... although I would hire one guy to help out simply because countertops is one thing I've never done.
And you're right.. it would be a HUGE savings. - JamesJM