I'll add myself to the list! 26 years old and have been getting into collecting machines in the past couple years. I now own a Singer 201k (with centenary badge) that i cleaned up from being in someone's garage for decades, two 99ks (one electric, one hand crank), and my mystery Peerless treadle (not a white peerless, I'm not quite sure what it is).
As for sewing, I'm a costume technician! I quite like my 201k for getting through heavy fabric, but have also used it for linen and softer cottons.