Elsewhere, people smuggling themselves across borders, breaking the rules, etc. are treated harshly indeed.
Why can't WE have the same sensible and rigorous system?
But the biggest factor in their decision to grant a visa is whether or not you will be an asset to the host country.
Chronic criminals and wards of the state are excluded from the get-go. They don't care how much you love your bum chum or whatever.