Then as the youngest and being the only one who's ever home, you get to witness your parents fight. At a certain time in your life when you are still growing up waiting for your turn to get out of the house, you wouldn't have the whole family sitting down and enjoying dinner together because your brother is busy with his family and your sister is somewhere far away. You don't get to talk to your brother or sister because they are not there and the only companions you play with are your dogs and your computer.
Also, you get to witness your parents grow older and weaker. When that happens, they can't work. When they can't work, no income. No income, you would have to go for local U. So you can forget your dreams of staying out of Form 6, going to Taylors or APIT or HELP or whatever private colleges and universities that come to mind. Being the youngest, you would like to make your parents proud of you and to show them that you're not as careless as your older brother or sister.
But you see, that is what will stress you. Sure you were pampered when you were younger but then when you realise you want to do something selfless, you have this whole weight on your shoulders and you would not have much confidence if what you're doing is actually gonna help you or not. Especially when you're so darn lazy and you get bad luck almost everyday.
Well, at least this is what I go through.