downpourbecause you can strafe when you spawn.
Contrary to popular belief you can create momentum from nothing in tf2 because of airstrafing, and since there are 4 spots you can spawn at, its impossible for them to kill you instantly every time.
That and bots will never have human-like movement. You can pre-program their movement but they won't ever have reactionary movement.
This.
If you want to be a super try hard you can spam rockets up in the air before you even see the other person spawn, or you can fire almost 4 rockets and hope that one of them hits. But shooting one rocket at someone spawning is really not that "bad."
Every time I hear someone say "you are defenseless/can't strafe after spawning" I cringe. You CAN. To me, part of the fun of endif is avoiding getting killed after I spawn. It's actually fun to me. But then again I love to surf.
Also, some games take soooooo long to finish in endif if you and your opponent are both very good at maintaining air control after you get juggled up. Spawn killing makes the games go by faster.
But, at the end of the day, if someone asks me to not spawn kill, I will apologize and respect their request. If someone really doesn't want you to spawn kill, I think it's rude to try and shove your opinion down their throat if they don't agree with you.
I used to be that guy though. I would spawn kill every time and when someone said something to me I would be a total dick about it and troll them. Eventually I realized how lame that was and stoppe.d