Can I share my Netflix account with friends?

Can I share my Netflix account with friends? And is there a penalty for doing this?

No you can't and yes there's (lifelong ban)

I have been sharing one for years and have never had any problems with it

You can share films and series: https://help.netflix.com/...e/node/464

You mustn't do that, everyone does it, there are also no punishments.

Well, that's not the case that the other person can watch it. You share that with them and they can then see what you have shared in their account…

Netflix itself knows that account sharing is prevalent and they generally don't mind. They even have a function where you invite your friends to your Netflix account