I think yes but they need to know if they are fully capable of doing the occupation. They should know if it will give them enough money to buy necessities. People should think about personal interest because if tou don't later on you are gokng to want go quit if you dont enjoy it.
Some should. You chose a job so you can get money, not for fun. Most people later on find it "fun" or interesting I guess. You are not always going to find one that interests you at the moment.
Unrequited love resulting to broken relationships or heart can be or could correspond to death. It may seem overly rated but this happens in real life as emotions play a big part to a person's well being. This is what makes us human.