Yeah I've read of previous research that shows countries with proportional systems are generally happier. I can't remember if this was happy with their government or happier in general, though. But it seems fairer. In a winner takes all scenario, it's hard for minority groups to get representation. In a proportional scenario, you need a lot fewer voters to get some people into parliament even if they can't pass laws on their own, they have their say, and parties often need agreements with smaller parties to get laws passed.

Our leader is not a president but a prime minister, and they have very little power on their own.