What kind of bug am I ???

This is the worst time of the year with these ants, I have seen so many sizes this summer and never had seen them so big.

Isn't bugs getting weird and new bugs starting to show up now that I never seen while growing up. I had a flying big thing and I never seen it before and it was attacking my car headlights so late in the night. It was huge and I couldnt identify it. Then saw almost similiar at my front door which the bright lights attracts them the most. I stand by and watched trying to determine what the world it is. This one looked more like a version of watermelon hard backs with wings and have atenas juz like ants and bettles. Can you tell me what this BUG is? What are they here for??? Are they safe to have them or not!?