Why are some Nintendo fans so opposed to going third party?

[curl-6]

007BondAgent said:

curl-6 said:
Because Nintendo make consoles with more interesting interfaces and lower price points than their competitors.

Let's just forget nintendo consoles tend to be underpowered and have an online mode stuck in the late 90's.

They're powerful enough to provide great games, and that's what matters to me. As for online, I consider that second only to achievements/trophies in terms of the most overrated aspects of gaming.