I don't think searches are effective, and if I was searched regularly or particularly intrusively, I would start getting upset, but as being searched doesn't sound that traumatic to me (though I've not had more than a pat down and a bag check), for now I'd much rather comply, make my flight, and not be on their database as a troublemaker.

If you have a problem with the way border control operates, I think it's a much better idea to try to deal with it while you're not standing in the middle of it.