i wouldn't get my partner a computer. it's too personal, sort of like buying a car, and something that really needs to be discussed. an ipad? maybe. an ipod? maybe. but, definitely not a computer.
As the above poster said, depends on how tech savvy it is. Would you want somebody consulting you for every decision they made in your behalf? Of course not, that's why we have a government that has layers of rank. We can't simply ask the public for every decision as they are not knowledgeable for every topic.
Same here. Sometimes the person just doesn't know enough. I, for one, want a motorcycle. Am I just going to go pick one out? Heck no, I'm going to read forums for a week at least and then ask opinions of every person I see riding one and my friends who are serious about riding dirt bikes as well.
Seeing as it's a present though, I would still rather tell somebody I like a street bike (ninja or whatever) and have them pick the best for me IF I could not pick for myself.