Speaking as somebody who was in a similar situation here's my input. Going back to a game such as Fallout 1 can be hard, it's not very intuitive and can be quite clunky to play. This for me made it a struggle to get into.
However, after having given up on it once I decided to try again a week later and enjoyed it a lot more once I got used to how it worked. So much so that I bought Fallout 2 straight afterwards, and occasional game-breaking glitches aside, I'd say it's one of the best games I have ever played.
I'd say give them a shot, they are dirt cheap and if you can look past the awkwardness at times, you will find an incredibly detailed world, full of all the brilliant quirks Fallout has (the humour in both of them is fantastic).