That's about the usable life I get out of Ernie Balls. Aside from environmental chemicals, the mechanics of a guitar in use put considerable force in several directions on the strings. Over the course of a couple or three gigs, the tiny dents and bends add up. The NYXLs have bright clear tone and resist physical distortion for much longer than EBs. BTW, if you want to wear out strings in an hour or less, get stainless steel frets. A client who insisted on SS frets now laments the cost of strings.........