To each his/her own. I like my triples. I don't condemn or judge anyone who prefers doubles. If you want to ride a singlespeed or fixie and you enjoy it, good on ya. It would be presumptuous and arrogant for me to profess my druthers are superior to someone else's.
But I love my triples - especially on my "Gee, I'm really out of shape" days.