Dex provides increase in defense rating. Seems like a reasonable off stat to me.
Defense Rating is dodging, and with such a low rating I don't think the guy in plate armor is suddenly going to start dodging attacks because of 1 dex. In fact I know that won't happen because I finally gave in and put on a +1 dex plate armor because it had been so long since getting an upgrade that I was now going to gain 10-20% in the 4 elemental resistances by putting this on.
Str increases carrying capacity. Being able to carry more is valuable to some.
That's what you have up to 4 party members for.
You can argue if something is ideal or worth it (to you), but that won't help your random loot argument as it is based on something being useless, not "less ideal for what you desire". This fits right back into my point. You want the gear tailored to what "you" consider valuable. So, this whole "useless" is really a subjective argument. /shrug
Or it's because you're an idiot that doesn't understand how shit works. 5 defense rating is worthless to a strength guy, and 20 carrying capacity is worthless to a dex guy. Those are facts.
you are also here complaining through every response about how bad this system is, you know... a system that has been around in their games from the beginning and they specifically chose to put in this new game. As I said, you sound like the type that likes to go to places they don't like and then whine about them providing things you don't like.
Diablo 1, 2, and original release 3 did not have smart loot. It was more apparent that it was a problem in D3 because gear was heavily changed and the most important thing you could get was primary stat, where two of the stats were completely worthless to every class. Smart loot was necessary for D3 to work, but that doesn't mean it can't help in other situations.
Just removing worthless stat rolls from items in Divinity won't mean that you always find an upgrade. There will still be times where you go 5+ levels without an upgrade. The difference is that you won't find a piece of gear that is ruined by a stat that could never be of use. The difference is that maybe you'll find +1 constitution when you really want +1 speed, but at least you won't feel jipped.