I also loathe 'myself' being used instead of 'me' or 'I' too. It sounds so naff! I agree with pps, that people use it, to try and sound more articulate than they actually are.
Another pet hate of mine recently, is people using the word 'transparent' which apparently means 'honest and open.' Transparent means see-through FFS. Like a WINDOW. Always has meant that. It has always meant something you can see through, but for the past 5-6 years, it's developed extra meanings... 'to share your thoughts and opinions honestly and respectfully,' and 'transparency is an approach to communicating and forming relationships that emphasize being direct with people." FUCK OFF IT MEANS SEE-THROUGH!!! It's often used on the news when reporting on politics ... Every time I hear someone say (on the news) 'they need to be more transparent' I feel my hackles rising! 
See also, people putting SANS in an ENGLISH sentence, instead of 'without.' Eg, 'we went to the beach sans the dog.' Why the random French word you pretentious git?
Finally, people have started to say 'chill' this past couple of years, to describe something that was relaxed and quiet and easy going. 'Last Christmas was so chill I could have cried.' Why????????? Chill means coldness, or coolness, or to scare, frighten, or alarm someone!