I am a quite shy person ad often, when i find an interesting composition-subject (like a person doing something, a goup of people in a nice setting etc), i struggle to capture it because i feel like i’m being rude taking pictures without their approval, but at the same time i think that, by asking them, the spontaneity of the shot would be compromised. What’s your take about it?
I don’t ask. But I’m also careful to not get in people’s space or be obvious.
Illegal in some countries. Can’t legally post the photos anywhere without the person’s consent on both taking the photo AND posting it.
Depends very heavily on whether there’s a reasonable expectation of privacy. There are almost no countries where taking a photo in a public place requires consent unless you’re violating a reasonable expectation of privacy, stalking or harassing them.
Posting is a different matter and varies more, but OP asked about taking photos rather than posting.
What countries? I know Germany has different laws than most western countries first and example.