Meaning of life? To reproduce. Priority 1 is to continue the human race, priority 2 is to continue your blood line.
Aliens exist? Chances are yes. There are probably around 1000000000000000000000000000000000000000000000000000000000000 planets. Of those, maybe 100000000000000 have conditions like Earth (suitable for life as we know it). That doesn't even include the potential for life as we don't know it. Also, these numbers are probably conservative.
What is love? An evolved form of the instinct "care for one's young". Especially necessary in humans, who must invest solely in 1-10 children to continue the bloodline, unlike fish and insects.
What is evolution? Process of elimination.
What happens when I die? Blank.