[2020] Is electricity designed badly, or am i doing something wrong ?

I play a lot of Factorio, and electricity is pretty straight forward there. In Rust, i must be doing something wrong, cause i dont understand some of the design choices i seem to come across.

1. Switches consume power - If i tie a switch to a battery thats being charged, and switch it on, it consumes energy even if itself isnt tied to any consumer like lights or lasers. And it will eventually drain the battery even if its charged by windmill and panel...
   
2. Batteries cant be strung together - This is really confounding. i got 3 solar pannels and a windmill, and 3 batteries. I have found no way to string them together so they charge and stay connected to the grid at the same time. If i use root combiners i cant connect more than 2. If i connect the batteries to the grid in a line, they ALL dont charge, they drain even while attached to 3 panels and a windmill.
   
3. Splitters and branching off main line - why cant you use a splitter to set the amount you want on every line ? Why do you need another component that drains power and complicates the circuit ?
   
4. Cost - Why HQM cost ? Isnt that rare enough ? I see armored walls in a base maybe once every 2 months. Why did this also need to cost HQM ? Its not like its a great advantage to power a light and open a door automatically.
5. Cant see power unless you have a cable - Hammer should be good for that as well.
   
6. Power input-output value - In a root combiner for example, you tie 2 inputs to 1 output. So 30 + 30 = 60. You dont see that though. In both inputs and outputs you see 60, 60, 60. Thats confusing.
   
7. Power units - Why not WATTS ? This combination of power units and time units is confusing as hell.
   

Am i doing something wrong ? Hope this f*cking post isnt going to turn into a sh*tfest, cause criticizing anything these days on this subreddit, unless its in meme-form, will have both the devs and the apologists come down on you like the wrath of god.