Mac users: Does your internet connection ever just "drop" for no reason?

I have a 13-inch MacBook Air and a couple years ago I had a 15-inch MacBook Pro. I noticed this problem on both computers; sometimes the internet just “quits”. I have to disconnect from the network through AirPort and reconnect and everything’s fine, but it shouldn’t drop in the first place.

Google searching reveals this to be a common problem with Mac computers but solutions are varied and unreliable. I know a lot of people on this site use Macs, so I’m just wondering, do any of the other Mac users on this site ever encounter this problem where the internet just cuts out? If so, have you discovered a solution to it?

I remember it was happening to several of my roommates last year where their connections would drop and they’d complain that the internet was down, but it would still be working on my PC. Is this just some widespread problem that Apple has never fixed?