A Jeep is all about "options" - Soft top, Bikini top, Hardtop, No top; back seat in, back seat out; soft top windows in, soft top windows out; full doors, half doors WITH your choice of windows, half doors with NO windows...
It's this very "convertibility" that I have always treasured regardless of what year/series Jeep you happen to have, which is why I'm on my fourth Wrangler now. As such, I absolutely HAD to have BOTH sets of doors, full & half. Mine came with full doors; I lucked up and found a set of the same year (2004) half doors w/in driving distance of me, albeit in silver rather than black. I took EVERY single piece that could be removed from each door and had them professionally painted inside and out, then reassembled them, including having the door locks re-keyed so that they all match - even that I NEVER lock the doors, being that I'm soft top only (the OCD in me, LOL). Hell, I even bought a 2nd set of stock mirrors and attached them as well, so I don't have to diddle-dick around with R&R'ing them...
As others have stated, the half doors look more "proper" on a Wrangler - the body lines remain unbroken. I just switched back to the full doors (a bit tearfully, I might add) last weekend for "the winter" here in SoCal. I'll get around to buying a set of Bulldawg fiberglass upper half doors some day; even then, I will still keep my full doors - It's better to have 'em and not NEED 'em than to NEED 'em and not HAVE 'em….