You're only tracked to the point of no return if you allow it.

Everyone knows the earth will recover. The ENTIRE purpose of "being kind to the earth" is to extend the amount of time US HUMANS can inhabit it.

I'm going to assume the English language isn't your native tongue and/or you meant "why IS love so sweet"

The answer is as simple and cliche as saying "because it's love"

When you meet someone, and have that instant (not always instant) connection with someone, it feels amazing. You want it to last forever, and everything you do is amplified into awesomeness when that person is around.

On a more scientific note... It's sweet because of the reaction that happens in the brain when you're around that person. The specific endorphins that are released are in the pleasure center of your brain, and that chemical reaction makes you feel 'good'. <--- Love is a drug!

Aren't there faaaaar greater things to be worried/upset about? It's not like this will have any negative effect on society or anything. People get worked up over the dumbest things.