Charging isn't about whether or not it's "cool" to do so, it's whether or not people will actually pay for it. Is your idea significantly better than what alrea

Charging isn't about whether or not it's "cool" to do so, it's whether or not people will actually pay for it. Is your idea significantly better than what already exists so that people would actually pay to use it, instead of some existing free product? For either option you need to figure out whether there's a viable market that will pay for what you're selling.