Are the people of yahoo answers too lazy to answer long questions?

No, it is just a pain to spend 5 or 10 minutes reading a question that is so confused that it is almost impossible to give a good answer.

Not me. Recently, I spent around twenty minutes on a long answer to a long question but when I clicked "Submit", the question was gone.

short answer yes

Though really if you have to give us your life story on a Q you might want to think about asking a professional instead of random strangers online

One can get their point across eloquently with being too wordy.

i don't waste time on long questions If question is too wordy or can't be posted with minimum words I ignore it.