I should clarify: I'm not asking about pieces for my build. I'm asking about the components *in general.* Are there are certain ones that are so delicate, likely to wear-down, or prone to misuse that you don't want to trust others with them? Which ones? Which components aren't like that?
If I need to be asking about specific pieces for my build then I'm in the wrong section. Where should I post this instead?
Yeah motherboards and RAM are actually the other things I was thinking of... RAM is probably a safe enough bet. I've had sticks die, but it's always been soon as I take them out of the pack and install, so probably manufacturing defects. I've never had a working stick stop working. Motherboard is also probably be fine I think, and I suppose CPU equally! Just be aware of course you won't have the warranty cover. Main things to avoid really are SSD and hard disk - you definitely want those new.