iI don't think that it's wrong, but remember, just do it if you have not any option left to live. Suicide is a bitter way to leave this world, man. If you have any difficult problems, just face it. From the point i see "Welcome to NHK" anime and found a theory that life is
90% of pain and
10% of happiness, i found something that we need to live on. If you life is full of happiness, you will not understand the meaning of "HAPPINESS" anymore. Just imagine you're eating a chocolate. If the chocolate is all SWEET and don't have any BITTER taste anymore, will you say it delicious? And so is life. There's no way one will get a life full of problem and do not getting any happiness at all.
Just remember the chocolate.
remember, suicide is the last last option.
i do not suggest it, but i do not against it either. Choose suicide mean you're a big loser.
if you choose to die because of romance, like breaking with your gf, you're not more worthy than a piece of junk, man. someday, you'll regret it in your second life.