this is coming off the top of my head, other interpretations obviously exist.
did you notice how most of the eps had nothing to do with the central plot? did it seem as though spike was wasting time, getting nothing accomplished? tbh, only about 4 episodes deal with spike's past. let me reiterate, spike's PAST. that's the show in a nutshell. he is running away from his past, until he finally realizes its impossible to escape, and useless to try. his death was icing on the carefully crafted cake. take for example, the 2nd (or 3rd, idk) episode when they chase Ein. the episode is basically just running. RUNNING (away from something perhaps, rather than toward?) the music is another point. Bebop is, as i hope you know, freeform jazz, with no rhyme or reason, not meant to explain anything except a minimalist version on chaos in our lives. the music is fast-paced, sporadic, takes action. the characteristics prefectly describe spike when he is after a target. he becomes a bounty hunter to explore, be constantly on the move.
k enough for now: in conclusion - reflect upon your experience watching bebop, analyze the purpose of each episode, and you will realize that they are nothing more than chase scenes and witty jokes. then, string the episodes together, and relate what happens (essentially nothing) to the last episode, and the character development of spike. realize how each character that meets spike and jet during the show, quickly disappear, never to be mentioned. bask in bebop's beauty, appreciate the masterpiece.
you don't have to like it, but if you do, at least appreciate the message.