I have a Macbook Air which isn’t an ideal computer, but one worth keeping. The system has been fully upgraded with 16GB of memory, and 1TB of storage. This system should last at least a few years. It will take a little getting used to with the smaller keyboard. Also, there are no keys I frequently use such as Page Down or Page Up keys. I am guessing this is because of the smaller size/form factor.
I will like to get a desktop PC as the screen will be larger, and easier for my eyes since I don’t read small text up close well. This however will take a bit of time as Mac Computers are very expensive.