"Don't go in 1v5 or we'll leave you to die."

That quote is why people tend to dislike playing tanks. I'm sitting here playing Shyv jungle. I'm pretty tanky at this point and see the enemy team, a pretty clear way to go in and get on top of the fed Vayne and kill her instantly. I ping for us to go in, I ult in and start smacking at the Vayne and... Everyone runs away in fear. I die after a few seconds and then am told to not go 1v5 like an idiot.

Seeing a problem yet? If I go in, my team abandons me and gets at me for it. If they went on us, they'd get at me for not doing it first. I'm sure many tanks deal with this and as someone who's getting into the role the best he can, I'm feeling their pain way too much. Please. Go in with your tanks. If he's dead you can barely do anything anyways.