Is it worth making an account for the game?
It seems to ask for a lot of unnecessary info...
E-mail, password, language, country, and birthday is all you actually need, looking at the form; the rest is all optional. That required bits don't seem too outre to me, though the optional bits are a bit more significant. That said, I don't know if it's actually worth it. I already had an account for...well, I'm not sure why, but I think it was because I've had a forum account there for a little while, and some data here and there got cross-populated when they were building their second web storefront (ParadoxPlaza, not GamersGate) and coding in all the game interconnectivity. If not for that, I probably wouldn't have signed up; heavens know that even with the account, I didn't start signing in with the games for years. I think they occasionally give out free stuff, but I don't know if that's actually linked to the game accounts. It's also pretty rare and pretty unnecessary stuff; a mere one or two cosmetic DLC are all that spring to mind.
Actually, if it is tied to the storefront, that's probably also why a lot of the optional information is requested: it makes sense for a storefront to want to know your address and name, especially since they've started shilling physical merch as well. And, since you don't necessarily want to buy stuff through there, it also makes sense to leave it optional.