Yeah your back will bother you cycling on regular bikes if you are too damn lazy to work your core and strech every once and a while. Recumbants are for couch potatoes, I am surprised they haven't started building them with cup holders for the 32 oz. soda cup and a tray for your burger and fries.
Hey now. You being so critcal is mean. I won't make fun of them anymore now that I know some people really cannot ride a regular bike. No matter how "strong" their core is.
My cousin got kicked in the privates playing soccer and had to have surgery years later, if he rides a reg. bike the scar tissue will build up and he won't be able to pee. He lives in San Fran, and a bike is really the only way he can get around.
For me, I haven't even tried riding a bike yet, only recumbant at the gym. 1)I am scared to fall and break my hip. 2) I cannot sit well with pressure on my sacrum.
If I am not able to ride a bike, recumbant will probably be an alright alternative.