I learned to sew on my mother's Kenmore, which she also learned to sew on (probably during the 30s). For my 21st birthday, my husband bought me the top of the line Kenmore. I loved that machine and put millions of miles on it over the next 32 years. The clutch was going bad. Hubby bought me my Bernina Aurora 440 Quilting Edition in 2006. I wasn't sure if I could make the adjustment, but now you couldn't get it away from me! Last year he got me a little lightweight Kenmore (with a pink hardside case) to keep in our camper, since we like to camp alot and I don't want to jostle my Bernina. I did have a serger about 20 years ago, but I hardly used it and got rid of it.
So I guess in my lifetime (so far) I've only had four machines, plus the use of my mother's.