Why would anyone waste their precious time to even do those things?
Because some people are whack jobs.
I've been the recipient of all kinds of accusations and threats via forums, e-mail, telephone and RL. I had one whack job phone me from Florida.
She: "Oh, [name redacted] I'm so glad you're in my circle!" Goes on to ramble about ghosts, UFOs, angels, etc.
Me: "I think you have the wrong [name redacted]. I get calls about UFOs for him from time to time."
She: "Well, can you put me in touch with him?"
Me: "No. I don't have his number and I'm not 411." Hang up.
This started a series of phone calls on various days badgering me to put her in touch with him. I finally block her number and she starts calling from a friend's house. I call them and leave them a message saying shes misusing their phone to harass me and block that number too. She calls from a third phone and I block every listed area code in Florida.
Then the snail mail started coming. Envelopes with "protected by angels" written on the outside. I collect them and and put them in a big envelope marked "evidence" and make sure my sister knows where its kept. Just in case I get a live visit from a whack job with a gun.
So, yes. I know exactly what that's like and some people ARE that crazy.