Wikipedia on Dread Pirate Roberts from The Princess Bride:

While Roberts is impressed with Westley's work, he continues to keep Westley's future in doubt by saying each night, "Good night, Westley. Good work. Sleep well. I'll most likely kill you in the morning." After about three years, Roberts and Westley have grown close, and Roberts promotes Westley to his second-in-command.

I feel this way about many tools. (Like TiddlyWiki!) They feel itchy to me, yet I use them daily. Sometimes I get a serial enthusiasm to reinvent that particular wheel. Results in this are historically mixed for me.