[shelf]

I suppose this is a valid 'pro.' Creating users is nothing to be feared, though. It is possible and simple to set up a user to be refused a shell and subjected to resource constraints.

I have always placed my git servers in BSD jails to minimise the worry, but you penguins have no such option!

[qznc]

Creating users might be a problem, if you are working within a larger organisation (university in my case).

Penguins have LXC, which is comparable to BSD jails or Solaris containers.