You're really stuck on the transmission part. It's not the only piece of the puzzle, and I think that's where your confusion is coming from.
The vaccine immensly lowers your chance of being hospitalized from COVID-19. I don't know if I can truly convey the significance of this.
When our healthcare system is on the verge of collapse from beds beign taken up by COVID-19 patients, it's a disaster for everybody.
You get in a car accident, guess what? Our ACU or ICU and emergency room beds are all occupied by COVID-19 patients.
You have colon cancer and need surgery? Guess what. The risk of you getting COVID-19 from the weakend immune system from the surgery outweighs the risk of keeping the cancer.
Not even going to touch on elective surgeries being post-poned.
Mental health - you really want to raise a generation of orphans? You expect society to thrive when a teacher or a classmate dies in the middle of the school year, year after year?
Private health insurance - our premiums stay low thanks to healthy people. What do you think happens when millions of "covid survivors" require expensive treatment for the rest of their life? The insurance isn't going to eat the cost. We all will.
And transmission, you really think there's no difference when when someone is only transmitting the virus for a few days vs a couple weeks?
There's no selfish approach to addressing the pandemic. There's no live and let live. We're all connected through econimic, industrial, healthcare and other systems.
You taking up a hospital bed affects other people, like it or not.
All these hospitalizations are taking a huge toll on your nurses and doctors too. The more people who take the vaccine, the closer we can get to normalcy.
The covid vaccine is also clearly effective. The fact you're saying it's not is a dead givaway that you don't know what you're talking about. I work in this data and am very intimate with it. Trust me, you do not know what you're talking about.
I suggest you take my original advice and call the CDC or talk to your doctor if you still have questions.
This isn't pointless. It's fucking critical. Just because you don't personally understand something, doesn't mean it's not necessary. If an entire professional community comes to a consensus, and you disagree with it, you need to hold your horses and admit that there must be more to the story.