That's a pessimistic worst-case scenario way to look at it. The same could be said of almost anything else. Why make friends? Why post on Hacker News? Why read

That's a pessimistic worst-case scenario way to look at it. The same could be said of almost anything else. Why make friends? Why post on Hacker News? Why read books, or watch TV, or leave your house? It's never enough to say "Bad things can happen" and leave it at that. You need to make the case that the costs outweigh the benefits.