I have time to write 1-2 novels per year, and get roughly novel-sized ideas every month. I have to perform triage on my own writing impulses.

Writing novels takes up about 100% of my available working time.

Gene police! You! Out of the pool, now!

I wanted an agent who would actually sell stuff. After two British agents failed comprehensively, I was reading Locus (the SF field's trade journal) and noticed a press release about an experienced editor leaving her job to join an agent in setting up a new agency. And I went "aha!" - because what you need is an agent who knows the industry but who doesn't have a huge list of famous clients whose needs will inevitably be put ahead of you. So I emailed her, and ... well, 11 years later I am the client listed at the top of her masthead!

An important factor to note is that it's rare for anyone to sell a first novel written before they turned 30-35; long-format fiction tends to require a bunch of experience of human life that takes time to acquire. So your average mid-career novelist is in their forties to fifties!

I don't think most of my opinions, political or social, are so far outside of the mainstream that they'd cause massive outrage on a scale liable to provoke death threats or referrals to prosecutors for outraging public decency, so why worry?

Back before the internet we had a name for people who bought a single copy of our books and lent them to all their friends without charging: we called them "librarians".