You're only delaying your inevitable death by 2.5 seconds, meaning you respawn 2.5 seconds later and that's the only thing you'll ever achieve with it.
When you're going to die anyway, just get it over with and die. The team may need you 50 seconds down the road, as opposed to 52.5 seconds.
2.5 seconds less time for you to be pushing my base/taking another objective while my team respawns.
2.5 seconds for 4 teammates > 2.5 seconds for 1 teammate
Think of it this way, they have to wait 2.5 (probably closer to 3-3.5 after ability casts) to kill you. If your team just got aced, that might have bought them enough time to respawn and defend the inhibitor turret the enemy team is now pushing for. 3 seconds less of free attacks on any objective is huge for your team. It is relative, and I imagine there are scenarios where dying sooner could prove useful, but in most cases, I'd assume it would prove beneficial to your team.
Thanks for the advice, I sometimes need to abide by this. Sometimes you just get stubborn, ya know?
Oh, and to every Karthus/Galio/Amumu in the world... your R button isn't for revenge either. :P
Best move, you zhonyas near a wall then flash over immediatly, either enemies also burn flash or you get out free.
You're only delaying your inevitable death by 2.5 seconds, meaning you respawn 2.5 seconds later and that's the only thing you'll ever achieve with it.
Respawn timers are often longer than ult CDs or item active CDs though. LoL isn't DotA where you have buyback, teleport on everyone, and monster cooldowns.
You're a lot better off using everything you have rather than curling into the fetal position and taking it, especially considering you're not really dead until you're dead in LoL. Using Shyvana's ultimate to escape is better than just dying.
And most AP champions have ways of damaging targets while they are within Stasis. Heimerdinger, Annie, Zyra, Morganna, Karthus, Brand, Kennen, Swain, Mordekaiser, etc. If you can force a 1 for 1 when you're outnumbered, you really limit the capacity of your opponents to turn it into an advantage.
And you can bait a lot of damage with Zhonya's. If you're worried about cooldowns - forcing multiple hostile cooldowns because you blocked an R puts your team at a significantly better place for those 50 seconds you're respawning.
