Fate-is-one-edge: Ubisoft is not on the bright side of pro-consumer practices, to say the least.
Uplay is Ubisoft's homemade D.R.M. solution, while I still remember the days when AC2 required legitimate owners to be constantly online to play.
That and many many more unforgivable things, of which I have had enough through the years. Enough to make me avoid their products as an expression of art, to an extend, beyond the manner they are sold and supported.
misteryo: OK. I get all that, but you said "their despicable launcher." I am curious what is bad about their launcher.
Simple. You don't have the launcher installed? Then you can't play.
Ubisoft servers are down (happens more often than someone would expect)? Then most likely you can't access features of "your" games (not just multiplayer, but also DLC and certain single player elements).
For example Rainbow Six Siege features a single player mode, playable only when online.
Uplay is a clunky piece of software, and I suggest using it to see for yourself.
It was primarily created to "keep tabs" on you, and straight up permit you, or not, to play the games you bought, under vigilant scrutiny. I might as well have rented them.
You consider differently?