Moto, unfortunately there is a lot of monetary reasons behind that bullshit too.
Hey, my site gets xxx k clicks a day, it's POPULAR, and they are real people too !! even if it's people telling the bot to go fuck itself.
this makes the site look bigger, better, more important, more popular bla bla, ie worth more money, and raises it to the higher tiers in search enges and other heavily manipulatable entities like that.
now i can sell advertising space for more.
now i can GET more for the garbage 3rd party advertising i have on my site, especially for those horrific cpm models.
the admins are not doing this to genuinely improve the site ( for who

?) they are doing it because someone sold them on the bs that it will bring more income into the site and make them rich, quickly, with zero effort, make money at home, sitting around doing nothing, i made 34,2543 last week alone...... vomit puke gasp.
these bots also have access to the back end, so they get to see the info about you, where you lurk, what you have, what you like, that they can then sell. i don't need to see the cookies on your machine that you so closely guard, i can see everything thru your ip. no your vpn does not keep you hidden, you do stupid shit all the time that outs yourself and lets me tie A with B to link you.
let me expire everyones password, so now you have to give me an e mail to log back in with, that's where ill send you the link to reactivate you... now i got a live e mail to tie into you with, i can pull a lot of header data off that too. oh you sent it from an android xx, thru verizon server in central florida, hmm, what have we got down there to market to you...
swallow this poison, don't worry i have a pill to cure you.... TRUST ME it's for your own good.
Aaron