Why do people do that ?

I agree with you 100%. The longer the answer the more confused it makes me.

Thats because some people are been affected by philosofhia virus, even I've got many answers like that, but dont bother its your choice whether to read it or not, think of it that someone has taken so much pain to answer your question, ur a top contributer I hope u r not doing that...

I hope that was not too long...

;-)

Sometimes the question deserves a long answer to properly cover the material.

If I check my answers and and they are like 1 mile long I won't read them.

long answers can be helpful to confused people while

shorter tends to put them into doubt sometime

I totally agree. But only because halve the time i can't be bothered to read the answer.