Ideologies, in the usual sense, are just thinking systematically and critically about what you want and why.

Some people don't like to look to closely at that. This is understandable. I think it relates to what Popper called "the strain of civilization". Knowing that here are countless people out there who don't know you, don't care about you, and worst of all, don't care about the things that are most deeply meaningful to you.

Everyone who's not completely oblivious, feels that strain. And rejecting "ideologies" is one way to cope. One of the three basic ways.