A pilot who tells me they can safely fly anything without reference to the aircraft checklist worries me.....
Truly worries me also.
To the OP, welcome to the world of Pprune. Please use a checklist for your flying. Flying is a building block approach, A, B, C, D etc. the checklist is an aid to ensure that you are proceeding with your learning curve, and are safe in doing so. It is very easy to miss something, if doing from memory.
Yes, we all know the ones that kick the tires, light the fires, and spiral themselves into the blue yonder. Good for you. One day it might just go pear shaped, like having the fuel caps left on the Tarmac, or the pullrod left on the front wheel, or heaven forbid, a circuit breaker gone on your comm unit etc etc.
My view, checklists enhance and confirm good airmanship. Good luck with the Cessna 150....