Maybe some of us don't want to build our own computers. We prefer to just buy them. I guess that makes us slime.
I have to remember not to visit this forum again. You look for intelligent comments and you get slammed by a bunch of super-geeks.
Let me get this straight. You came to a forum that's mostly comprised of people who build their own machines and regularily offer advice to novice builders posting the specs of the pre-built machine you just bought. I'm curious what types of "intelligent" comments you were expecting? If you were looking for a round of WTG's well, I don't think that was realistic.
That said the machine you bought will likely play the game well for several years. Not knowing what type of PSU or motherboard is in it it's hard to say how upgradable it will be over the long term.
While I understand people's hesitancy in building, next time I would seriously consider it. It's very easy (2-3 hours to build, 3-5 hours to transfer data, install apps, etc.) and the wealth of knowledge in this forum would clearly help you in selecting parts that would outperform any prebuilt system. Besides that, when you build you know exactly what you have, you already have an upgrade path in mind and it's fun.