& how come more ppl don't do it?

i remember a part in the movie "whole nine yards" where matthew perry's orthodontist character turns to a slightly gap-toothed michael clarke duncan and says something like "you know i can fix that gap for you, it'd be an in & out procedure"

word?

are there other options besides braces? dental bonding? veneers? crowns? retainer? bands?

is it worth the cost? (are your teeth just gonna naturally separate agn when the braces are removed?)

at what age should one not bother? (how old is too old for braces?)