Sure, Richard, it's how you shoot, what you shoot, when you shoot... It's worth it to me but not to you and I am sure there are others who will agree with either of us.
If I'm in a hurry and have the choice I'll pre-focus, and with tab-focus lenses like my old 35/1.4 there's always the option of 'feel focus', but wide-open at night the only real choice for me is a low-flare rangefinder: at folk nights, parties, performances, etc., the MP is simply the best Leica EVER, bar none. My last M3 (also black paint) was smoother and sweeter but no 35mm frame gives the MP the edge for me.
I also like the self-zeroing counter -- you have to pull out the load spool on an M3 as far as I remember.
Cheers,
Roger