Support PSA: Post UP in lane.
To clear a few things up, I"m an ADC Main, so yes this directly affects me, yes I"m biased and whatnot, no that doesn't actually invalidate my point but you're cute for trying.
Being an AD means I also have some knowledge of bot lane and how it should be played. Now I've played with a lot of supports over the years, and this season I've started to notice a troubling trend: Supports playing way back and forcing a considerable loss in lane. We'll walk out from blue buff, and instead of approaching the wave with me my support will often times stop under tower and just wait for no discernible reason. Now as a bot laner I know full well we're not about to die if we walk up to hit minions at level one against Leona Ezreal barring some sort of massive fuck up or a 1v2 because one of us decided not to play the lane. And no I've not died to this so it's not just a matter of me being salty and blaming my support for my 'mistake'. I understand doing this sort of thing vs Lucian/Draven with a hook support or early cc as Ashe Sona, but if we're fucking Nami Caitlyn into any non kill lane you don't need to give it up! We will win this lane, and if we don't it'll be an execution failure not because we just let them have it free.