Do the problems it purports to solve just not interest you or did you have an alternate suggestion?
It creates more and worse problems than it solves. People find it alright to write code that only works in a specific combination of language and package versions, and that is a shameful state of affairs.
That has nothing to do with virtualenvs though.
Can you explain why? It is not the cleanest thing is the world, but it is not that bad IMHO.
It's not difficult to install and use. Nobody is forcing you to use it.