Much as I'd love to be able to reproduce, note for note, the basslines to all my favourite songs, there are a few issues that would intervene.
1. Many of them have no 'agreed' absolute original line. I was actually listening to John Pattitucci's line for How Sweet It Is earlier today, which he says is the line that Jamerson actually played, and frankly I don't agree. [Spoiler: He's probably right and I'm probably wrong.]
2. I am fairly promiscuous in a band/music sense. Right now I'm 'in' three bands and I occasionally dep for at least two more. Each of those five bands has at least three hours' worth of repertoire, so I need to be gig ready with at least 15 and in reality perhaps 25 hours of music covering Hank Williams to Bruno Mars. Playing every note of every song exactly like the original is a pointless exercise.
3. @MacDaddy is quite right. When I play Elvis in a 3-piece someone has to provide the missing piano fills, when I play Sam & Dave in a 3-piece someone has to be the brass section occasionally. If I get all up myself and refuse to play something because "well Duck Dunn never played that", chances are the band isn't going to last long.
4. There are some depths I will not plumb. Just because the original bassline contained slap, there's no need for me to sully my pristine fingers with such pathetic, desperate behaviour.