I knew this day would come sooner or later....just never expected it to happen when I'm 50.

My eyesight has gotten so bad at night that I won't drive after dark. During the day it's not too bad but my depth perception is not good and that makes me question myself too much. I don't trust my own judgment anymore. It's not fair to others who are driving who do have all their senses about them.
So, I do believe my driving days are over. Not so terribly bad because I really don't have the funds to do anything if I did go anywhere.

Plus, DS is spending more and more time at his GF's place and is usually only home 1 or 2 nights a week....if that much.
I had thought that renting a car when I needed one would work for me and, it would be a good plan, but I just don't feel comfortable anymore driving.....especially a car that isn't mine.
I checked with a local taxi service and it would only cost me about $12 for a trip to the pharmacy and the grocery store and back home. Once or twice a month and that's definitely cheaper than renting a car or the expense of owning one. I've never, ever used a taxi before so don't know the "etiquette" of it all. Do you have to tip these guys? Is it a safe alternative?
Before anyone thinks my kids have abandoned me......I haven't even discussed this with them. I know they'll tell me that they will take me anywhere I want to go but I don't want to depend on them to pick me up all the time. I like the idea of just calling the taxi and being able to go during the day when
I want to go. Plus, the boys have their jobs and their friends and I really don't want to have to ask for anyone to make anymore concessions on account of me. I'm just too independent and set in my ways. KWIM? Gosh, I sound like I'm a 90 year old little grumpy grandma.
What do ya'll think of this plan? I'm really okay with it as far as being able to get out and go. I'm a little nervous about the whole taxi thing because I have no idea who will be driving.

I'm so untrusting of strangers.
Give me your thoughts and ideas. Maybe there is something I haven't thought of. My only other idea was finding a millionaire to marry but that's not looking too promising for the near future.