I do not feel like my dignity, quality of life or freedom of movement have been degraded in any substantial way by the level of additional security I've seen in my travels. I recognize this is not the same for everyone, but personally, my life has continued on as it did before. In fact, with programs like TSA Precheck / Global Entry, my quality of life has noticeably improved.

You are free to disagree with me on whether or not the reasons for additional security are 'objectively insufficient', but my personal opinion is that the additional security I've seen is reasonable when it comes to international travel. For domestic travel, I think it's overkill in places, a position consistent with my original comment above.