Hmm, that's interesting. A skinny tyre will have a long thin contact patch. Won't that have a lower chance of encountering something sharp than a wide contact patch of the same area. Add to that the likelihood that a skinny roadie tyre is going to be at a higher pressure than a big hybrid tyre, then the contact patch will be smaller anyway.
But that smaller contact patch pushes down with higher pressure, so if you do run over a fairy present, there's more chance that it will go through.
Most people I see cycling around town don't seem to be carrying anything more than themselves when cycling.
A patch kit and mini pump will easily fit in a pocket, or even if no pump is carried, it's only a short walk in most towns to a petrol station with a pump - although many advise against using them on bikes, plenty of people do.
Do you use a 2mm Allen key in the little rotator slot to loosen off the cable tension & unhitch it & same getting it back on? It's as quick as hoiking a derailleur out of the way but Shimano do tend to expect you to know the slot is there.
That bit may be, but then there's the brake reaction arm, the chainguard holder and all the other stuff that Shimano hub gears often seem to have hanging on the axle.
To turn up for a group ride ill-equipped and rely on others to fix your bike is downright bad manners.
Not always. Some groups are quite happy to say "only a bike is needed" and the guide and/or back-marker carry common tools and spares. If people keep coming, then it's preferred that they carry suitable spares and ideally mini tools and levers which they may need on their solo rides to/from the start/finish, but there's not that much point in everyone carrying duplicate full toolkits, or letting obtaining those tools and spares being a barrier to starting riding, is there?
A few weeks ago, one of the riders who has been there far longer than me found that he hadn't the correct-size spare tube for his new bike... I didn't hear anyone suggesting it was bad manners.
Personally, my commutes are within town, so I never have to worry about finding a rack to lock up and then catching a bus or walking to my destination.
Where is this utopia with working public transport, plentiful cycle parking throughout town and no thieves?