There isn't a website that has yet existed that is necessary. That could also apply to every movie and television show that has even been produced, and most books. If your content is valuable, it will generate value. You just have to find out how.
If I visit a site where ads ruin the experience, I'm gone. There is no content that can justify that reality for me, so I act accordingly.
I find advertising to be reprehensible in its mass form. It conveys the very worst of us, and exists upon, and strengthens, a platform of dishonesty. There are exceptions, yes, but that is the general rule IMO.
I block ads in every way that I can - if I find a site with great content that interests me, I pay for it. That's exceedingly rare.
Point being: if you want to exist, find a different revenue model. If your users are blocking ads, that should be communicating something to you - and very strongly at 50%! Change your behavior, don't try to change theirs.