Eh, depends on the person and how you go about doing it. I've met people who have become homeless and lost due to the spiritual pursuit, and I've met others who have found their passions and thrived

due to spiritual pursuit.

I think it's all about moderation. If you're going to pursue spirituality, you should also pursue things like philosophy, science, arts, etc. so you can balance it out.

Unfortunately there's a lot of false-knowledge out there in the spiritual super market.

Another note is that pursuing the understanding of yourself is both constructive and destructive in many ways. You destroy false beliefs and you build yourself up, among many other things.