Edited.
Might well be nice. I'd be more concerned with their safety. Look how we treat our own species, countrymen, and families. To say nothing of non-human species eating them, making themd o tricks for our amusement, and use them for Nazi-like medical research.
If we're judged by aliens on how we treat others, we're royally screwed.
Get real, they would be magical creatures compared to us. We quite simply couldn't touch them if we wanted to. On the other hand, they could vaporize you at will and there's not a damned thing you could do to stop it.
It's that simple.
Wouldn't be 'making contact' if they wanted us dead. Could do that from orbit and we'd never know they were there. Could poison the atmosphere, release a plague, nuke us, etc. If they show up, the assumption is they're either friendly in not killing us outright heh, or they want to trade things.
My fave 'we're screwed, they're hostile' scenario is the aliens understand us enough that they give one faction of humanity advanced weapons technology and we use it wiping ourselves out. Like the bit from "Real Men" where one faction of CIA wants an alien weapon "big gun" which can destroy the whole planet. The opposing faction reasoning, what's the point of that? But bureaucracy being what it is this goes unlistened to.
Be very poetic to give the US advanced alien weapons tech and we kill ourselves indirectly.