Why am I so sensitive to death?

ever since two years ago when a clmate I wasnt even close to was killed Ive been extreamly sensitive to death. Ecspecially when steve irwin died, I was extreamly overcome with saddness, which sounds silly because I didn't know the guy but he was a big insperation of mine, and when Heath Ledger Died as well. I also feel a closer connection to these people, more to steve irwin and heath ledger then the people I was actually around. so I guess my true question is why am I so connected with these people after their death? is it normal? please don't judge me, Im only asking for a little direction. thanks.