For me, yes. I'm socially awkward and the idea of meeting someone IRL after knowing them for a short time online kinda weirds me out.

depends on what you're dating, you can use carbon to date fossilized bones but you can't do that with rocks or living, eating beings or even most sea creatures. plus at some point you have to switch to potassium-argon

yes, at least for me

no

Depends on what you're trying to date. Trees? easy. Carbon? easy. Radioactive elements? easy.

Definitely, it's all a game of pretend and requires way more self confidence that I can muster