Do you think aliens in ufos have visited Earth? (And all things UFO)

I'm 100% with Optimus on this one ^.

It's one thing to passively search/monitor for alien signals, but I think it's monumentally stupid to actively send out signals....effectively inviting a search party to a planet that we ourselves are captive on, with no means of leaving. I can only think of 1 good outcome from that, but about 99 ways to regret it.