Checklists are great, but consider this: can you locate all of the circuit breakers mentioned in the procedures in less than five seconds? Why not? It’s a bad idea to hunt for circuit breakers during an abnormal situation.
VFR pilots operate in the same airspace as commercial IFR jet aircraft without having to ever hit the push-to-talk button. Most of the time things go just fine and the two operate without running into each other. Not having a requirement to talk to anyone doesn’t alleviate your responsibility as a small airplane driver to understand the airspace around you, though.