Pointless tweaks

Am I the only one who thinks that tweaking is pointless? Maybe there are a few tests that really have extremely faint lines and tweaking helps but I feel like all the ones I see about asking for tweaks are so obvious one way or the other. Plus tweaking brings out all the indent lines Evap lines. Maybe I'm wrong and tweaking helps some people but I haven't seen one tweak that actually showed a real positive that wasn't already visible.