I'm not that tall (5'8" or so) but I'm of the opinion that unless it's a trans-oceanic flight with the possibility of sleep or someone has medical problems with it, they shouldn't be allowed to recline. Ever.

Heck, there are some Delta configurations where my knees are digging into the seatback in front of me even when the person ahead of me has their seat full and upright. (I have long legs for someone my height) And I am quick to mention my kneecaps to anyone in front of me who digs their seat into my ACLs.