When it comes to the Bard, if you choose to play every Bard as a comedian, that is a choice. I am playing my Bard as slightly more serious (though I cannot fully resist the lure of insiuating their lineage contains hamster dna or that a certain smell lingers on their parent's breath).
In combat, my Bard engages in
vicious mockery quite frequently, but out of combat he's in the running for the most serious party member.
I do agree the illusion of choice can be missing, as in the belief that if you choose option a) they get a -1 here, +1 there and -1/2 point on their mileage while option b) is a +2, -1 and a pillowcase but, to me, those options were rarely different from each other in 3rd edition.
I...don't actually want
illusion of choice, though. My experience with 4e hasn't felt like an "illusion" of choice. I have enough variety of options from level-up powers that I can actually have meaningfully different options each turn, like a single-target spike, a whirlwind attack, etc. I honestly didn't play that much of 3e, in part because of the illusory "choices" you mention (particularly since specialization was the only way to make
one of them good...unless you were a caster, of course.

)
If I played my Bard without considering what other people are doing on their turn, I would probably also agree I have nothing to contribute, but then I'd probably choose not to play a Bard (since they lack a lot of bonus action spells and are stuck with a poor choice of damage options until 6th level, when they get extra attack or magical secrets). Their reaction options are absolutely great as a lore bard, however, which still puts them firmly in the place where they have to pay attention the entire round. And if you're the kind of person who only cares what you can do, personally, on your turn then I don't think Bard is right for you in the slighest and it might be why you are getting bored.
Kay so...I'm playing a Valor Bard, rather than Lore...and even if I weren't, I would only have
just gotten it last session. So that's not super helpful, just from the get-go. (And, before it's asked: the DM insisted on beginning at level 1. I
did ask, once, politely.)
Secondly, I never said I
don't care at all what other people are doing. I do care. But with only two uses of Bardic Inspiration
per day, and at the moment *zero* things I can do with my reaction (not counting OAs), I don't really have a whole lot of options there. I had hoped that I could initiate some combos by grappling enemies, but my character is so fragile that trying to engage in melee has proven a death sentence (in one case, literally). I've handed out my BI dice...and then they typically go unused, even though I made every effort to remind people about them.
I'm not sure what else I can be doing. I wanted to be providing a form of battlefield control by Grappling enemies (the Moon Druid typically takes Wolf form, so we have ample sources of Prone already), but as stated before, I got so thoroughly screwed up for trying, multiple times, I'm afraid to risk my character's life again. I wanted my spells to be clever battlefield-manipulations (my character sees himself as a budding blademaster), but instead they end up going almost purely to healing because combats have pasted us multiple times (in the span of...6 or 7 sessions, we've rolled
at least 15 death saves between the five of us).
My point about the "enjoying other peoples' turns" was not that I don't
care what they do, but rather that what others do doesn't define my
engagement with the rules. Whether I have to exert cognitive effort to participate in the fight is completely orthogonal to whether I care about the things other people are doing during their turns. As it stands, I feel like I have too few tools to work with, too few opportunities to use the tools I have, and too much pressure to conserve extremely precious resources because most every fight is a harrowing, barely-survived-with-some-people-bleeding-out experience. Most of the time, there's either too little material to engage with, or I don't get the chance to engage at all (like the combat where I dropped from full to 0 HP in the middle of the first round, because it's totally cool for a CR 2 enemy to have three attacks and thus do more average damage than I have health as a level 2 Bard).