This is an interesting question. I am beginning to really like the philosophy forum!
"...why do we finish up with more questions and answers?"
This sounds like a Murphy's Law I know.
"In every solution, there are problems waiting to happen".
In my opinion, the answer lies in our human nature. OK OK, I know that sounds kinda silly, because your question was about our nature as humans. But, we, as humans, are very curious. In fact, in my opinion, we are often too smart for our own good. Or, in other words, we're so smart that we are dumb. We invent all sorts of technologies without investigating what harm they might do to us, and then mass produce them. The a few years later, when the cancer patients come in....
I feel that the need to question things and people is a good thing. If one wants to get on a spiritual level, in the Bible, Christians are instructed to test spirits. So, we likely question things both because we are curious and for defensive purposes.
Suppose that a party was elected in the United States, which perpetuated marxist ideals. What do you think would happen? Most likely, there would be fears of another comunist revolution. And then, likely, there would be many questions asked, lol.
And finally, as my mother always maintains, "The more you learn, the less you know."