On my eBike I'll happily explore hills without thinking about it. Given that my eBike is pedal-assist, you still have to work hard to get a top speed going up a hill but I no longer feel hills are a problem.
To go back to the first point there are issues with too much progress. It makes us lazy. Not enough and we might suffer. The balance is important.
I remember one anecdote about Northern African culture. They don't mass produce tech, instead they go with the flow and find solutions on the spot, by the means of a few tools. They say it's smarter to do it this way (maybe, maybe not), surely it keeps your mind creative.
Also, in dev circles, having too much compute power makes your solutions bad. Because you can just ignore the innefficiencies. Plus it's self feeding through the hardware market (more bloat, more sales)
My pick was the Brose mid-drive motor available in Tour 50nm/City 75nm/MTB 90nm models. I then bought an ex-demo one off model from a localish bike shop. https://www.ebike-manufaktur.com/en/e-bikes/11lf-shimano-deo...
Problem with battery meant it took 11 weeks to get it back on the road as the shop did not have a relationship with the bike manufacturer.
The bike however is phenomenal. I weigh 130kg and it takes me up ANY hill in Bath. There's a couple of 1 in 3s that I can cycle up one handed.
It's saved me an absolute fortune. In fact after owning it for a month, my wife wrote off my car. We just took the insurance money and didn't buy another car going down to a one car family.
I have a gold standard D-Lock that is side mounted on the frame (weight not an issue) that I use when parking up. There is also a dutch style rear wheel lock mounted to the frame I also use. The battery has a key that keeps it locked to the frame. The head unit for the eBike display is removable and I take that with me whenever I leave it locked up making the motor unusable.
Basically you're trying to steal a 25kg (55lb) bike with multiple security features and relatively unique electric parts that people would be wary of buying due to lack of guarantees.
Sometimes if I'm popping into a shop/café, I use the bike stand, lock using the dutch lock, and just take the head unit off. I'm guessing somebody could pull up in a van and just lift the bike but the opportunistic 'snatch' is so not going to get very far.
(Though if you don't need the e-thing 310€ will get you started)
As a way to get from A to B quickly, nothing beats them in a city.
I did an Air Pollution piece for the BBC comparing exposure of somebody walking, cycling, and driving in and around Bath. As the cyclist, they told me I was travelling around the city a bit too fast for the pollution monitor to get all my data correctly. ;)
I recommend spending $3k on a bike with a Yamaha or Bosch motor, it's easy to justify that crazy price if you look at the money you'll save in gas/payments/gym expenses. Most importantly, I enjoy my commute now and I feel like a part of the city in a way that car commuting doesn't give you. Also, get a pedal-assist bike not one with a hand throttle, trust me it's not better to have a throttle.
Disclaimer: My new startup is ebike related but I'm not going to be selling any bikes or hardware.
If you like your bike commute and don't mind getting sweaty you might prefer a normal bike.