Loads.
I was on my way back from visiting family in rural Wales, on my bike, panniers full, about 10 miles to the station. It started raining heavily, and as I got off to push my bike up a steep hill, a man in a truck stopped, and gave me and my bike a lift to the main road. (A risk yes, but it was fine.)
A few years later on a train from Paddington to Cardiff- it was absolutely ramped, last train that far on a Friday evening, so I was in the corridor. Sat on the floor with a guy who was going back home via Haverfordwest to South East Ireland - he told me exactly where by drawing a map in pencil on the train wall. When we got to Cardiff, I stepped onto the platform where my parents were waiting - and he leapt out after me, kissed me, and jumped back on the train, leaving me to explain to Mum and Dad...
Then there was the woman who handed me her baby to look after while she went to the loo, on a flight from Jo'burg to Perth.
And the woman in the petrol station who had forgotten her purse, and couldn't pay, but only lived locally, but also had her child, and couldn't leave her child, and it was all getting a bit tense. I paid for my petrol, and said, "can she leave the car here while I give her a lift home and back?" So she gave her carkeys to the cashier, i took her and her daughter a few streets away to their home, and she picked up her purse so she could pay, and I dropped them back at the petrol station. I sometimes wonder how her daughter is doing at football, if she still goes.
Almost exactly a year ago, I stopped in a service station on my way home from a funeral, and was eating some chips, and I started crying, and a lady from the next table came over and held my hand and I explained it had been a funeral in between using the pile of napkins she gave me.
People are mostly kind, really.