People troll my games because I pick Vel'koz support.
Vel'Koz support in low elo isn't bad. It's quite good actually. People don't know how to dodge, I can poke, have massive impact in teamfight with my ult and steal drakes/baron.
I have 52% winrate in ranked with Vel over 370 games. My average kda with him is 3.9/3.6/9.1 and got over 220k mastery points.
However sometimes people go complete nutcrackers when I pick him. They tell me it's a troll pick. For example this Sivir yesterday who run it down in botlane and went 0/8/0 in 15 mins because "if I troll pick Vel, she will troll too". 3 days ago I had the same issue with Miss Fortune who ran it down because "she will not play with a Vel support".
Also people flame me in lobby. Say the most horrible things sometimes because of my pick. I think I lost maybe 8-9 games because my pick triggered a teammate to troll :( I also had to dodge some champ select because my adc then picked Soraka adc for example because " we lost already with a Vel support "
This is really frustrating but I refuse to pick another main in order to make people stop trolling.. I enjoy him the most of all champs so why would I give it up?
support main
is more than viable as a support. His pickrate dropped during the meta shift but he's still on the same tier as other AP supports suitable for the role like

. If I had to tell something crazy, you have less chance to win a game
etc than when picking
) but someone who wants to play, say, Kog'Maw or Jinx is going to be rightfully angry because you provide nothing to alleviate their weak early games. If you want to play a support that can deal damage while you have a Jinx or something, pick Lux or something, that way you have at least a shield to throw out.