The neighborhoods are NOT equitable. I'm currently in a neighborhood that ranges from players at level 630,00- to 22.5 MILLION...YES MILLION. How is that equitable?
It's equitable because they're all in the same age/era as you. That's exactly how it's equitable. Ranking points don't mean anything specific and can't reliably be used to define any player's strengths and/or weaknesses in any specific aspect of the game.
I can't tell what ERA the highest players are in, but they certainly are not near mine.
You absolutely can by visiting their town and looking at their town hall. At most, they might be one age/era above you, but then there may also be some at the bottom of your hood that are one age/era below you. That could be due to a leftover of players in an age/era not fitting into a hood of only their age/era or it could be that someone aged up after the hood change. Technically, someone could age up multiple times immediately after a hood change, but that's highly unlikely and even less likely to happen multiple times for a given hood.
I believe you need to rethink your algorithm for placing players in neighborhoods.
They did.
I keep getting put into neighborhoods with MUCH HIGH players who continually defeat and plunder the best army I can put up.
You'll need to work on putting up a better defense. Consider a tavern shield or improving your defensive bonuses.
It gets frustrating and causes people to drop out.
Those who do are weak players. This is a strategy game and your goal should be to become the best, not ask for everyone else to accommodate you at your level. Some of the growing pains cannot be avoided and some can. You only need to work harder to get results. Many players have been where you are and succeeded. Many have failed. Which will you be?
And why am I always at the bottom? Why can't I be at the top or even in the middle? Just makes no sense to me.
It's probably because you have very low ranking points for the average player in your age/era. The hoods are "ranked" by points, but it hardly means much since the #1 player could have a two-Spear defense and no defensive stats to boast of. Ranking points mean nothing. If it bothers you, increase yours and you will climb up the hood rankings.
If you put everyone in neighborhoods what are SOMEWHAT close to their level
This is exactly what they do if you interpret age/era as "level".
I've dropped several cities because it just isn't worth the aggravation.
This might be good for you. Unless you are comfortable working multiple cities to a point where you aren't aggravated, you should focus on as few of them as possible and grow them, gain experience, learn to be the best... then work on more cities if that's your desire.
In one world, I'm at 950,000. I'm third from the last in my neighborhood and the higher players are at 22 MILLION... Yes, MILLION. That's just ridiculous.
You joined this forum 5-1/2 years ago, which assumes you've been playing the game at least that long (and that you should know that they already made a major change to the way hoods are sorted, which should've definitely been in your favor). I've been playing for roughly 2 years. I have 7.3 million ranking points, which as I said, mean exactly nothing. But -- why are you stuck at just 950k after almost 3x the playing time? Ask yourself that question in a serious self-critique, and perhaps ask the forums for help if you are unable to answer it for yourself.