This is an interesting question and there are only complex answers. For example, some countries have excellent support for technology, others are better with accessible public transport, others excel in the area of providing compensation for the costs of your blindness even if you’re working.
I live in New Zealand, and the agency I lead provides a fund which will support a blind person and any other disabled person by paying for any disability-related equipment they need when they land a job. This incentivises employers to employ disabled people because they don’t have to meet the costs of technology or other expensive accommodations themselves.
We also have a payment to compensate for the extra costs of your blindness, which, subject to a couple of anomalies, you can get even when you’re working.
Most traffic signals here are accessible.
But on the flip side, Braille in public places is frustratingly scarce, and public transport can be flaky in places with the announcement of stops only just becoming a thing.
Ironically, the US rehab system is heavily Government funded, whereas in commonwealth countries like Canada, the UK, Australia and New Zealand, there’s a lot of reliance on public donations.
It’s hard to go past the US for access to technology and information, but there’s a lot of variation from state to state, and the degree of haves and have nots in the blind community there creates serious disparity. I believe in Missouri, they have a similar system to ours, where you can receive compensation for the costs of your blindness even if you’re working. This is a big deal because living close to public transport, having a little extra space for your technology, is important and that comes at a price. If your costs aren’t compensated for, you can get into that horrible trap where you want to work, but if you get part-time work, you receive just enough to impact your benefits, but not enough to make it worthwhile.
Spain is also a country to check out. ONCE, the Spanish blindness service provider, pronounced Onsay, is a powerful organisation with an incredible funding base thanks to the lottery there.
Generally speaking, Europe is very pro-Braille and there’s plenty of funding available for Braille displays. I’ve met and worked with many Europeans who’ve had Braille displays funded for both home and work.

Then of course we must remember that our blindness is just one characteristic. There may be political, cultural and other lifestyle factors not blindness-related that may make an otherwise attractive place from a blindness perspective seem less so because of those views and preferences which are personal to you.

Australia is quite good, and I think that New Zealand is also quite good.

I’ve lived in Canada and in London. England. London is amazing for public transportation. Toronto, not so much. You can live in a smaller town in England and still get around. Getting around Canada in a small town is a little harder.

What kind of support do you want?

I’m in the US but I have travelled to Finland and they were very accessible there. Their public transportation can’t be beat.

I don’t know much but my basic understanding is that the US and Canada might be the best places for support.

I've heard japan is very good. And the people go out of their way to help.

I feel pretty supported in California, in the US. I'm hoping to move back to the bay area though when I'm out of school (learning programming and UX design) because that was the best. Trains, Uber pool, lots of people (so it's easy to find groups), very walkable neighborhoods, etc.