What the deal with the bullets that have half the tops cut of?

[Gee]

Is it for soldering the wire in at an angel?
or
To save on the amount of solder used?
or
For those of us that do a half ass job soldering?
or
The company is trying to save money?
or
So you can see what you are soldering?
or
So short people can see in the cup?
or
To save weight on the RC?
or
They thought it would be funny?
or
Just to give me something to wonder about?
or.....