We owned one when we lived in India.
Based on what you described, I would not get one in your situation for these reasons....
You can't ride it when it's
rainy
too cold
too hot
which is pretty much 75%-80% of the time
You may just be doing short trips in but they can't carry a lot. Dh would wear a large backpack for the market stuff he bought. I could not have managed the weight of all the food and me driving it and if you have arthritis, it would make it even more dangerous.
The $3000 upfront cost is only the beginning. Then there are helmets, maintenance, and insurance. It might just be easier to 'budget in' an extra $3000 in gas over a two year period.
Even with the sidecar, (which will add to the price), how many days in the year will you be able to use it based on your description. I know here it seems the perfect days of spring and fall when it's not too hot, not too cold, and no rain number about 10 days in the spring and 10 days in the fall. The rest of the time it's either freezing, boiling, or pouring rain.
Now if you lived on the west coast, didn't have arthritis, and didn't mind the heat, I'd say go for it.
Here is a photo of ours.
