Certainly, other ships offer different experiences that may appeal to a given individual more than what
DCL offers; DCL is not the best fit for everyone, of course. However, since the OP's post was clearly about
affordability vs. personal taste, that's what I was focusing on.
No, I'm not sailing Concierge, but the actual amount I pay is irrelevant. The point is that, for some people, there are comfort and reliability factors associated with Disney that are worth paying a premium for.
And just because someone chooses to stick with a cruise line that's worked well for them in the past doesn't necessarily mean that person has a "fear of trying new things" and are "missing out on life". As I said above, for some people, their one family vacation for the year might be something in particular that they just don't want to mess with. "If it ain't broke, don't fix it", in other words.