Most "Power" users have at least 1 external battery that plugs into the charging port when the internal battery isn't good enough.

The fact is that in order for the phone manufacturers to develop and sell phones wanted by the average consumer, the old style of consumer service-friendly phones are going the way of sealed devices that require you to take the device to a service center at your cost.

In addition, it is common to be cheaper to replace than repair phones. The average life span for a cellular phone is as little as 2 years. I have had phones that have lasted much longer, but I am referring to an average life.