My apologies for been different.
Went digital in 2007. Got around 200K digital exposures by now.
Never gun shoted. Just spend a lot of time with camera, daily.
And events needs plenty of photos, sometimes.
I came from culture without consumerism.
As addictive as it gets, I tend to get rid of things I don't use.
One of the reasons used Leica prices gone up is because of "never sell anything if it has Leica on it"
It is nothing but hording to me.
Sorry.
Keep always camera with you is water under the bridge.
Only if you are zoomer.
If not, not too old phones will do. It is not so pleasing and good as with camera, but it is still valuable tool.
Dual slots... I had card failure only once since 2007 and it was card from dodgy place.
All of my cards with reputable brands, places of purchase are still working.
Dual only makes sense to separate video and stills, IMO.
To be very honest, spare batteries, cards are needed if camera, batteries and cards are crap.
Spare battery is fine if in camera is at the low charge or it is -10C and lower.
Most of EVF cameras are crap by default. It just eats batteries.
Leica digital cameras seems to be the only cameras with memory cards quirks.
And to be very honest, one digital camera is enough for 90% of us, because we are not into paid gigs.
Just don't go with Leica for it.
I have Canon 5D MKII and Canon 500D. They keep on working on same memory cards and battery lasts forever.
Leica is nice to have, but I would never keep it as the only camera.
Lens on infinity... Maybe, but if you are not landscaper, infinity is less used lens focus position.
If you are with rangefinders, lens to be kept on infinity for storage, the RF arm spring is less tensioned this way.
If camera is in use, get to understand true zone focusing. Which is by focusing tab. Keep it in the mid zone, need far - swing one side, close - opposite. It is always the same as long as you are not hording and have one camera (at least type).
About taking pictures of people. Take it if you like them. Don't take if you need your photos to be liked.