The irony of no-one replying to a thread with this title!
Anyway, if you are talking about that faux business formality that some use it for ("If you identify any low-hanging fruit that will support these deliverables going forward, please come and speak to myself or one of my team." "Was it yourself who will be heading up the brand refresh piece?") then I'm with you.
I think some people are over-correcting because they know it's wrong to say "Me and John are doing X", so they substitute "myself" for "me", even when "me" is fine.
I find estate agents are the worst culprits. The only thing to do is outself them.
"If yourself would be interested in the property, then contact myself at the office." "Iself am very interested - could yourself contact the vendors and arrange a time at themselves' convenience for yourself to show myself and mypartnerself around theirself property? Myself would be very grateful and as you also have my partner's email could you forward this to himself also?"
Just came looking for Pedants' Corner to complain about this very thing! Are reflexive pronouns no longer taught in schools? Mind you, I always laugh because it reminds me of Arthur Shappey in "Cabin Pressure" when people think they're being extra clever using "myself" and "yourself" instead of "me" and "you"!