I am not a bouncer, preferring to use footwork angle changes to help set up the opponent and disrupt his concentration. I've tried it, but it's just not me. Those that do bounce may find success in messing with the opponent and at the same time, give themselves a moral boost in feeling energetic and keep themselves relaxed and loose. I do find bouncers distracting and annoying at first, then put it out of my head and totally ignore it. I find it makes no difference in the actual physical fight, for me.
Many bouncers do it too fast and provide too small a window to take advantage of the timing or put them too much out of position for a quick response to my moves. So I find it mostly a mental thing for the bouncer to pump themselves up and the opponent who may be thrown off. So I just ignore it and do my thing. Those that use big high bounces are going to pay the price from a good opponent, but there aren't that many foolish fighters in the higher ranks.
So, to bounce or not to bounce, it's up to your personal preference. Makes no difference to me.