I live in an apartment complex, and have a parking spot out front of the building. If I buy more than I can carry in one load, I leave the non-perishables in the car for a day or two, and bring them up on my next trip anywhere. I can usually put two six-packs of soda in a canvas bag, sling it over my left shoulder, then have another canvas bag I put the perishable stuff in for my right arm. When I get inside the building, I put the bag on my right arm on the stairs, then drag it up a couple of steps at a time, until I reach my apartment, which is at the top of the third floor. It's a short set of stairs for each floor, so it's not a big deal.
I'm not interested in having anyone else pick my groceries out for me. I'm picky when it comes to the bacon I buy, and no clerk is going to look for the leanest bacon, or worry about a can being dented. I worked in NY State's prison system for 25 years. I don't trust anyone. It's a side-effect of the job.
A few years ago I was using one cane. A few years later I was using two canes, which makes carrying anything a trick of grasp and double tote. I am now using a wheel chair to get around though I can still walk with two canes. I can carry things and do kitchen work from the chair. Family have gotten so used to me in the chair that it surprises them when I use the canes or stand to greet them. There are a few really good small electric chairs available. I have purchased several. I have one plugged in at the top of the second floor and one on the main floor. I built to get from garage floor to main floor. When you get an electric chair, get one with front wheel drive, not rear wheel drive. The turning is so much less involved.
Are you disabled or just lazy & weak?