Actually, when it comes to sound production on the bass, by far the grand majority of players are on the plucking side, i.e. using fingerstyle, as opposed to using a pick (plectrum) to put the strings into motion. Of course, the two approach are not mutually exclusive, and there have been phenomenal players featuring either of those. I tend to choose based on what sounds better in a given piece of music, all the more so since some styles of music are better suited for one or the other.. That said, the great Bobby Vega, one of the premiere proponents of the pick, says that "you can make the pick sound like fingers, but not the other way around".
Here is another excellent representative of the picking camp - Cody Wright - explaining the WHYs and HOWs of his approach. I find is particularly interesting because he is known for this ferocious funk playing, which is a style typically associated with fingerstyle or slap, but not so much with pick,
Hope this inspires you to look for and experiment with new sonic expressions on bass.
