Not for ICE, the only train worth getting for me. Also I don't live in Germany, in the Netherlands. Trains are expensive. Even though I live in the Randstad, near big cities, I don't have any good public transport here. It's just not worth it for me.

Yes, but not for the IC and ICE which are long distsnce trains. Those are still separate tickets as usual.

Local trains, not ICE or IC.