Aliens - Are they out there? Have they visited us? And related questions

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Is there intelligent life outside Earth?

Yes.

Have we been visited by beings from other planets?

Not that I know of, though some bacterium/etc may be present.

Would aliens look like us or carry basic similarities?

Some do.

Is the money wasted on looking for life outside of Earth?

At the moment: yes. Also, set up some defenses and perhaps settle some new territory before you start seriously trying to find your neighbors. Scouting is not unimportant, but prioritize not being absolutely obliterated instantly, I should say.

Could or would aliens have a similar society to our own?

The cultures of the universe are varied and often complex.

Could or would aliens believe in a 'God' figure or have a religious society?

Yes.