Hello Lumia_black,
I went years before ever wanting or even considering getting a flu vaccine. Then several years ago I decided to get a flu vaccine. I have never been sorry and continue to get one each year, usually the first or second week of October.
The strange thing to me is since I started getting the flu vaccine I rarely get sick, with anything viral

I have never figured out if it has simply been a coincidence or what

Whatever the reason, I love not dealing with viruses or the flu
Best wishes!