>>1714875Diminishing returns. A few hundred for a bike that can last many years with minimum upkeep and keeping it outside 24/7 outweigs a few thousand for a fancy bike that practically isnt 10 times better.
most bikes have gear thingys to easy going up hills, but yes in the end muscles can only take you so far uphill, after that its downhill.
You do need to be in relative flat countries. There are a few hilly or mountainais ones where there are bike elevators to take you up.