You can choose not to take the experience. But to kill the demon I waited for the Gnomes to do most of the work then I used my noob magic and still beat him easy. use your best Fire spell.
I would say 1gb would be fine for surfing the web and everyday gaming and stuff like that. If you want to play games like Second Life which has an interface that dose not stop loading. You will probably need around 3gb.
Companies care about the people who spend their money buying their products. They will do whatever they can to get that money, So in that case yes they do care because if they didn't they would be out of business.
eh, with every new update there is surely a new batch of players to walk right into the rants forum and rant about it because they simply do not take the time to learn about what they are ranting on about.