why so much players have a rush mentality

[Misutoraru]

that's the hole point.
problem most are not willing to do it. they will ignore you. or just never be willing to except what you ask for.

If latency is not too bad for you, JP dc would definitely fit you better.
Generally, we are less “rush” and bit more talkative. Most of the time tank take first 2 pack as a gauge to test how the team handle, rarely see non tank player rushing ahead to do the pull