Are pets a good investment?

its heavy
one time on a trip to portugal my father and i found a baby cat
we waited around to see if the mother would pick it up but it kept crying for hours so we took it in, drove it back to germany, and brought it back up to strength
i got insanely attached to it, i was a ten year old boy, so of course i did
one day my dad comes up to me, hugs me, and tells me that he found the cat by the side of the road, it had been hit by a truck
man
it taught me about the fragility of life