Well, in my opinion only people with shady business who will use a mixer, if you are working right why would you hide your traces? if you can answer this question * from where you got that money? * then you are clear to go, if not then your business is not that clean.
a mixer is a money-laundering machine.
LOL you must be joking right? Can you really be so ignorant? If you want the government to keep tracing you and know where you're getting your money from and what you're spending it on be my guest but don't criticize people who want to be wiser.
Maybe you feel safe now because there's nobody knocking on your door or sending you letters but this may change one day. Now your government doesn't care but if Bitcoin ever hits 100k USD you'll not be a normal citizen. Bitcoiners will be seek as cash cows for some of the more corrupt governments.