Pre-select in champion select

I don't get why people don't use this in bronze it's there so that everybody on your team has a general idea of who you plan on playing as so they don't accidentally ban your champion, or pick your champion, or for more strategic minds like me being able to synergize well with you, and the rest of the team. And it also gives us a clear intention and helps us know for a fact that you aren't trolling builds trust, and one thing that drives me nuts is when I ask people to pre select I get people I don't wanna fuck you and shit like that, it's like damn your like this before the game even starts definitely not somebody I'm wanting to play with, please be a team player pre select let's build some trust before the game starts.