44 yrs old--time to stop working on cars?

[Carrameow]

http://mywebpages.comcast.net/snow7ice/BENZ.html

I have an 85 300D (Owner Rebuilt engine) 83 240D (owner rebuilt engine )91 Volvo 940 Turbo (owner rebuilt engine).
The last couple of weeks, all three cars were idle and needed major repairs:

2 Alternators (240D/300d)
2 MacPherson Struts (Volvo)
1 Exhaust System (240D)
1 set rebuilt brake calipers (85 300D)
1 ball joint (85 300D)
2 AC systems
1 Front End to be fixed--(240D)

I did all the work on my last vacation in 95 degree heat and 95% humidity. I feel like I am 95 years old this morning. I am surprised my wife didnt leave me. The neighbors think I am Nuts.

I watch the new generation of kids, they are going into business and Computers and healthcare. They dont work on cars. I feel like an old violin maker. I started working on cars when I was 23.

Is it time to hang this up and go out and buy a new car?