I never said that I am not willing to believe the contrary.

I am not willing to believe the contrary from strangers on the interwebs or PR departments of companies who want to sell me something.

If people I genuinely trust tell me about their experiences, I am willing to try again.

But yes, if it doesn't work for me (for whatever reason, could be that I am holding it wrong), then I can accept that it works for everyone but me and still not use it.

Also "scientific" doesn't mean what it used to mean. When the n is small or it's just anecdotes (I am aware of the irony) blown out of proportion I really can't take the data and conclusions seriously