I'm saying that people make excuses and the word But may be in them. but what follows that will determine.
eg.
1.Yeah I want to come to the shops but I gotta put on my shoes. uses word but - not fearful

1. Yeah I want to but I don't want to run into anyone i know. uses word but- is fearful of public area
   so when you hear some one say but and think they are avoiding something, listen on and judge them on the rest of what they say or else you just sound picky
   so why is it not positive to say but? it is a word, use words