However, if you were unlucky enough to suffer with a completely debilitating mental illness, and all you have to treat it are a series of therapies that appear to work for some people, would you not try them?
Trauma therapies like EMDR and CBT can save or transform your life. Maybe they work no better than crystal healing or prayers for some people, but if your life was derailed I bet you would try anything...
Would I have to give up on my scepticism to do so? Why?
If I was in distress, and if there was no well-proven treatment available, I'd probably have a go provided the therapy wasn't actually a scam or actively harmful. I'd probably even attempt to engage with it honestly and openly.
But I'd temper my expectations based on the lack of reproducable evidence.
I mean people would even try those with enough distress. And to be fair a lot of surprising innovation comes from people trying those! But of course mostly they're a scam or actively harmful.