Yeah, I'm in the club. It's a weird progression with me. I get a bass with new strings and love how they sound. I vow to always use new strings on all basses, because dang this sounds great. 3 weeks later, I realize that 3-week broken in strings are actually better than new. Still zingy, with a little bit off the top. After two months, they start getting dead, and I forget what they sounded like fresh. I like them. I keep them. Six years later, I occasionally wonder if it would sound better if I changed them. But I like the tone and am lazy, so keep them. And so it goes until I have some true need to remove them or change them.Admittedly I like my flats super broken-in (I've got one bass with 8 year old Labellas that sound perfect) but now it appears I'm totally into "dead" rounds these days too. It's funny, 'cause growing up I was all about changing my Rotos before every gig. I've got some DR Nickel Lo-Riders on a Jazzbass that have toured and been on that bass for...I'm not even sure how long, but it's been years. They sound just right--I'd be bummed if I had to change 'em! Anybody else in the dead rounds club?
Truth be told, I like all states of string decay, from brand new through super dead covered in moldy margarine residue.