Play with my friends? I do. We used to stack teams, then it got boring. Randoms also won't want to play with you if you are a known premade, so we stopped doing it. It's not much fun for our opponents, who generally ragequit, and it's not challenging for us.
If we play on opposite teams on the other hand the game is more likely to be even, and more fun for everyone playing. I am suggesting other premades do this, or advertise their being a premade if they are going to stack teams.
Personally I really don't care if you stack teams and make a lobby, I'll join, lose quickly, then make a note of your team and not play against you again. Others ragequit and are being berated for it, which I don't think is entirely fair since you're not being open about stacking the teams.
So my point is that you're probably damaging the community by doing this? If it gets to the point where people can't play PUGs because it's dominated by premades the game will be in a pretty poor state imo. That would be removing a giant chunk of the playerbase.
EDIT:
My problem isn't that premades want to play as a team, I think by all means they should, and if they advertised themselves as such I'd grab my friends and play against them. It would probably be a really fun game. The issue is that if I make a 3v3 lobby, my housemate joins the other team to keep things fair, and then 2 friends on voice comm join one of the teams and 2 randoms join the other, things are never going to be even remotely close.