A host named regret

[1111]

Addressing your complaints one by one, from my experience as a daily PinePhone user:

• Power consumption: Yes, it is high. Keep your phone plugged in overnight until you leave home and always carry a powerbank in case you need it, then you should be fine. Do not worry about your battery breaking with so many charging cycles. Mine has been lasting for years that way, and worst case, it can be replaced (and compatible replacements are also available from third parties, due to electrical compatibility with a specific Samsung battery model). Also do not worry about the phone overheating from the charging. Yes, it gets hot (and not only from charging!), but that does not seem to be a problem in practice.
  
• Performance: This device has an Allwinner A64 SoC, introduced to the market in 2015. PINE64 says in the FAQ that the performance is comparable to a Raspberry Pi 3 (introduced in 2016). What kind of performance did you expect from it? Yes, it is slow. It should not be expected to be fast.
  
• Android apps: Those are not expected to work out of the box indeed. Nowhere was it claimed that they would. If you want to run them, try Waydroid and/or the Android Translation Layer. Both are available in postmarketOS. Apps may or may not work with them, with currently a much higher success probability for Waydroid.
  

I have observed better power consumption than you describe, possibly because I keep bits of the phone turned off, and other bits simply don't work.
I have the phone set to stop charging at 80%, but since the percentile on the screen does not reflect this I manually disconnect the charger usually around 80%. The phone will usually burn through about half a charge per day just sitting idle. All it ever does is: sit idle, make phone calls, and pull updates. This may change soon, since I have just now installed Waydroid. I had tried to do so a month ago, but it seemed absent from 'apk list'... anyway I just tried it again after reading your post and it worked! Now to set it up.

I don't own a RasPi3, but I have seen them in action and they appear much faster than this phone does. The level of performance I expected is SMARTPHONE LEVEL. A smartphone should not take >1second to wake from sleep. It should be approximately as snappy as an old iphone or cheap commodity Android phone. An OLD one.
It shouldn't be slower than my old Nokia 5130 trying to talk to "internet" over GPRS!

I don't like iphone but that was the "smartphone" that has defined what a "smartphone" is in the public imaginary. If you have some other idea of what a "smartphone" is, then you should specify it's differences from that up front, and understand that your personal conception of smartphoneness might be idiosyncratic.