Just to share the story of when I decided to start getting the flu shot regularly. Not to judge or anything, just to share my story.

I had gotten the flu a few times before, but honestly, felt like "well, it's only x effective anyway, I'm going to get sick anyway." that normal spiel. Well, this changed at one point at my job. My working space was such that a few of our coworkers were sick-buddies effectively. If any of us got sick, the others would be getting sick. Sure, we should take sick time off, but by the time you feel bad enough to do it, well, you've already spread it. Happens. Again, no real judgement there.

Well, then one of my coworkers had a kid, and it was really close to the start of flu season and I just thought "If I get sick, I'm going to get him sick, and then he'll get his kid sick." And I didn't want that. Sure the vaccine is only whatever percentage effective, but that's just more likely not to get my coworker's newborn sick with the flu.

Now, that's an anecdote, and honestly one without much veracity in terms of if it was effective or not.