As one who is 6'5", I've never had a problem with clothes that are too long, just clothes that are not long enough.
And pants. Don't get me started on pants. I have a 35 inch waist and a 36 inch inseam. I'll go 36x36 and just wear a belt, but dammit are they near impossible to find. There's plenty of 36x34s, 36x32s, 40x36s, 38x36s, but finding a 36x36 is like hunting for a goddamn unicorn and dammit I got started on pants.
Oddly enough, I have a pair of cargo shorts that I've had for over 10 years, and they still fit just fine. Back when I got them I had a 32 inch waist...but even now they'll slide right off if I'm not wearing a belt. Either they've stretched over the years or I never realized how gargantuan they were when I got them.
Speaking of shorts,
all shorts are short shorts when you're tall -_-