Do you ever do online surveys?
I do sometimes because I feel that my opinion may be important. I don't answer surveys for money. Some people do but not me.
If I answer surveys, and it is taking me more than 5 minutes, I just stop and don't even bother continuing with it. Answering surveys for more than 5 minutes will just get boring. If ever I do continue, I may not be replying the right answers and the purpose of the survey may be defeated.
As an advice to those preparing surveys, don't take much of your target audience time more than 5 minutes. Or just pay people to answer your surveys.