Breja: Like I said, different cultures, where it may well be far more common. In Star Trek Klingons love their Bat'leths, swords and other melee weapons, even though they have perfectly good disruptors. And yeah, no shit our real world military training is different than the Star Wars universe. I'm pretty sure that if fighting droids, Wookiees and people wielding laser swords was likely to happen, we'd train our soldiers different too :D
Ah, you replied too fast while I was editing my post.
Yes, in some cases it could make sense.
But it wouldn't be common.
Btw, I doubt I'd challenge a robot in a sword fight :P
And a wookie deserves a shot in the head ASAP. XD
And about light sabers: they're rare and made by Jedi.
With mind control, force chocke or push, any melee would be useless against them.