Tor's primary purpose is to access clearnet sites, hidden services are secondary.

It's not a very bad idea. Tor browser provides good tracking resistance in clearnet, but there are more chances that uneducated person leaks personal information there and at the same time will have a false feeling of safety because they are using Tor, not Google Chrome.

Please watch the video and read our overview page here: https://www.privacyguides.org/en/advanced/tor-overview/

Bad compared to what alternative?

*exit node