I rode all kinds of single speed coaster brake bikes as a kid. My first bike was my sister's 26" that I retrieved from the chicken house feed room and fixed myself. I gave up bikes in high school, and didn't have another until college, when I bought a used Sears/Steyr 3-speed. I sold that and bought 2 Fujis (S-10-S) for me and my wife the first year they were available in the US. After that I was an occasional recreational rider for many years. Around 6 years ago, my nephew gave me an old Huffy single speed lightwieght that he had rescued from the landfill. I fixed it up, gave it away, and bought another old bike at a yard sale. I haven't looked back since. I think that I have 22 bikes now (not counting a couple of frames), all older and two are aluminum. I've probably sold as many as I now own; and I have given away nearly that many. None of my bikes are really valuable. They are lower to middle range road, mountain, and hybrid bikes.
I learned to work on bikes out of necessity, but now I do it because I like it. That's why I am on this forum - and BTW....MERRY CHRISTMAS!