OP, just to try to explain from a drivers perspective:
A couple of years ago I was picking up my 3 year old son from a sports activity. Every month the preschool went to a nearby primary school to use their gymnastics and sports facilities.
One of these days I had just come home from some lectures at the university that I was attending. Would pick up my youngest from the sports activity at this primary, go home, cook dinner and get the kids sorted with home work, get my stuff ready, and drive into town for evening classes I was teaching. So, a busy day. I would not be back home until 10 pm.
One of the other mums asked me "where do you live?" I replied "Oh, just the street next to preschool" She exclaimed: "Great, then you can drop me off on the way" Fine.
I just about managed to fit her mahoosive pram for her baby into my car, let her baby go in my sons car-seat, so needed to adjust the seat because the straps were not tight enough, my son was 3 and in a maxi cosy. This was a faff and a fiddle, and took some time. The mum was not used to cars so just sat down to chill in the drivers seat, not much she could do. I then had to let my son sit on my older sons booster, and her dd who was in my sons preschool class sit in the middle. This meant faffing about with the mid section car seat which was not three point but across belly, and with straps that needed to be taken from elsewhere and thread through a "needle hole" in the top of the seat. This palaver took 15 minutes!
To her it was "just a drop off as you were going this way". To me it meant fiddling about with straps and car seats and seat belts, standing out in the cold, while she was listening to music in the front.
When I finally got into the car and started driving I asked her where she lived. She gave the address. The walk would just have been 10 minutes past my house, but the drive was 10 minutes for me each way. As a non - driver she did not realize that I could not drive the same way as she walked, ie the short cut across the pedestrian bridge over the river. I had to go a large distance around, down the the mainroad, into the next neighbourhood and up to hers.
She was a sahm. She said "I was having a lovely bath with bubbles and all, and I lost track of time. I had to rush to pick up Eva from the sports club, and it is not nice to walk in the cold with wet hair." 
I bit my lips.
I had catapulted my entire schedule of juggling my day job, my evening teaching, dinner and homework with my children, for a sahm and her bubble bath to get a lift home because it was "nice" for her.
To her it was just a nice ride home, to me, it was a major inconvenience. I was home an hour later than normal to save her 10 minutes walk in the cold. She could not have predicted this. As a non driver, she would have no clue about car seats, seat belts, and roads which are not passable by car. she did no realize.
OP, I think you simply do not realize what a faff it is to give other people, their children, and their wet pushchairs lifts. To you, it is just 5 minutes back and forth, but the reality is very different.