Personal psi / tyre pressure choices

I don't see the point of inflating so high. I used to commute daily on Schwalbe Blizzard 23cs at 70psi and never got a pinch flat in 18 months using them. I weigh about 80kg and had at least another 5kg luggage every day. Heavier riders should just use wider tyres - proven to have better rolling resistance and far more comfort.

For me, this advice doesn't work. I can't say for others, but my personal experience works against what you have said.

At 70psi, I am actually then riding on the rim. I could demonstrate this too you, as long as you are willing to buy replacement tyres to replace what I have just pinch-flatted on. I ride at 120psi minimum, and even 100psi feels very soft; almost too soft.

I don't like wide tyres. I use a 700x24 Courier Berlin, only because it isn't available in 700x23. Normally I use 700x23 tyres, and find the choices and feel, to suit me very well. I weigh 50% more than you do, and my messenger bag always has stuff in it - so weighs a at least a further 2kgs.