I believe it is both age related and money related. When I was younger, I tried to do everything myself - cars, plumbing, electrical, appliances, home improvement, etc. I mostly did it because I couldn't afford to have someone do it and I simply didn't trust others to do it for me.
I remember one time many years ago I needed to have the cutoff valve for the toilet and the wax ring replaced, so I called a plumber. I sat there and watched him do it and within 30 minutes he was done and I was out $80 bucks. I was so mad at myself after realizing it was so simple I could have done it myself. Afterwards, I did all my plumbing repairs. Same with fixing the HVAC - after watching what they were doing, I quickly became my own expert and was satisfied in knowing I was saving my family money and I became the "go to" guy in the neighborhood for all their home improvement issues.
But now, at 59 I'm just plain tired. I sit on my **** all day for 8 hours at my job and then go home and what do I do? I turn on the tube. I've got a friggin BMW V12 engine out of my 850i sitting in my shop that has been there since last summer when I pulled the engine/transmission. You would think I would be out there working on it, wouldn't you. I mean, its got to be more fun that sitting on my *** watching TV - right?
I even bought a lift because I told the wife I was tired of being on my back all the time. You know what I do now? I raise the car up, sit on my stool, look at all the **** that needs fixing under the car, make a mental note of it, lower the car and proceed to go arrange my tools or sweep the shop out.
Hey, there's a movie at Redbox that I haven't rented yet....
I just don't have the energy to attack things like I did earlier. Its like its turned into a chore to do the things I once loved.
Oh, the humanity!
Take for example, I started a pergola 3 years ago. Three years, mind you! Bought all the wood, cut it to size and it sat in my shop for almost three years - tripping over it, having to constantly move it out of my way, etc. Finally, this summer - I finished it and I'm right proud of the way it turned out. But in the interim, I almost either contemplated selling the pergola or just shucking the whole damn thing to the curb because it was in my way.
I wasn't like this 5 years ago. The will to do all those wonderful, aggravating, boring, exciting things has waned over the years. I can afford to pay someone to fix my fence, fix my HVAC, change my oil, take care of my lawn, etc now. Swore to the wife my next car is going to be something I only have to put gas in and wash on the weekends. Wash? I don't even do that anymore - I found a drive in car wash a couple of years ago about a mile from the house. $6 dollars and less than 5 minutes and I'm outta there with a clean vehicle.
Somebody better find me a wheelchair for my 60th birthday....