My Commodore 64 was probably the best investment my parents ever made (at least from my standpoint). They first purchased it in. . . 1984(?) and I fell in love with it immediately. Power and simplicity, all rolled into one affordable package.
in reply to My first computer was...
I probably started programming it about 1988 (around the time I was 12), and by 14 the basics of programming had finally clicked. Two years after that, I taught myself assembly language on the C-64 at the same time I took a very heavy logic/proof based geometry class in high school. Smartest thing I ever did. Everything started to fall into place for me from that point on, and I never looked back.
I've had a lot of other computers over the years, but nothing has quite held a place in my heart like my C-64. I still keep it around, and cannot bear to part with it. In fact, as soon as I get my basement cleaned out, I'll probably set it up again there for old times sake!