Am I the only one who thinks mixers are useless?
Everyone who has average skills can protect his privacy without using such services.
They're not useless at all. Rather than using a VPN or proxy constantly it's so much easier to just anonymously mix your coins. I would suggest everyone mix their coins regularly because why not? It's a small price to pay for financial freedom.
Mixers are really helpful for those people who are involved with some fishy transactions and maybe most of the people in deep web uses this.
And even though you had a average skill in hiding your identity as long as you are in the web, don't be too comfortable that no one is able to trace your transactions or bitcoins from where you got it.
Besides, no one will trace you if you don't get involved with illegal transactions. There are some exchange sites from each country that prohibits to buy bitcoins from people who got their bitcoin from illegal source.
So that's the use of mixers in my own understanding, I don't know if there are some who using it daily just for hiding their history of transactions.