I can think of no arguement for why solo queue is a bad thing.
"But the flamers and trolls" You can find those guys everywhere, not just solo queue.
"But its a team game. Matching up with Solo Players isnt what the game is about." If that was the case Riot would have force Ranked to be 5v5 only.
"But Riot said Dynamic queue is the future" Yep. 20 minute wait times, getting flamed by the 4 man you got matched with, and because you are with said 4 man premade, you are now against much higher ranked players, even though thats not what you signed up for. Not to mention that the high elo queue times are ridiculous. Totally the future.
"But the queue times will suck" They already do. It will be spread across 2 queues but the only people who will see a significant queue time change will be the 4 man groups.
"New champ select is cool doe" Ok I'll give you that one. I wish fill didnt mean support and you could actually get your primary when you have support as your secondary, but whatever.
"Playing with friends always makes the game better" Umm No. There is a reason I dont always like to play with my friends. I get stuck in a role i dont want to because they main all the other roles (or they just have a fetish of sending me top lane) and tilt too easy. And those are just my reasons. There are more people with more reasons out there than just mine.
"Nobody will play it because they are already too far in DQ this year" While this might be true for some people who have already got gold or are close to it, there are some people (myself included) who are waiting on Solo queue to even play ranked. I hated the idea on paper and in video games, if i hate the idea there is next to no chance im going to play it. SQ wont reset your rank in DQ either so you arent really restarting. And even if it did, you know where most players would go after this season is done? SQ thats where.
"Just suck it up and play it" "You just have no friends and cant play Dynamic because of it" "You just hate change" "You are a sheep" "You wont play it because you know you cant climb" "You are just a (insert random swearing here)" Those last 6 arent even arguments. Thats just being a dick