I don't care what influences our unconscious brain, but why would we evolve to act seemingly irrational?

So I don’t care that we are more likely to tip on a sunny day or having a bigger box of popcorn makes us eat more. But why would we evolve in a way that seemingly unrelated things influence our urges?

Many urges make sense in the light of evolution like why we like fattening foods, babies faces, our family. So these primary urges make sense in the light of evolution, so why did we evolve so we can acquire irrational fears, or be influenced by things that make no sense and we know it makes no sense.

So why do we have so many things that influence our decisions that dont seem to make sense in the light of evolution?