The people who gave their lives in Harry Potter

Since I have not been able to figure out how to start a podcast, I thought I'd start a Harry Potter blog instead. My first topic is going to be talking about the people that lost their lives throughout the series.

I have a problem with some of the deaths that came about in the series. The first one is Sirius. Why did she have to kill him off. Harry had so much loss in his life, why couldn't she just let him have that one little silver lining. Harry needed someone in his life to be a father figure, I know their was Mr. Weasley, but it was never the same I mean he had six boys!! Harry was all Sirius had so for her to make him go away like she did, I think it was wrong. The next one was Fred Weasley...there was no point to him dying!! He was only 19!! Not to mention Lupin and Tonks...they were newlyweds not to mention they had a newborn baby that they never got to know!! I know Lupin made Harry godfather right before the big battle so Harry and the baby had something in common, but Harry was only 17 at the time!! I don't really think that Snape had to die either, his death kinda confused me. So I know this is short, but I am tired and its my first one...just keep the comments PG please!