I do software development and have a lot of experience dealing with databases and handling multimedia. I have a friend who wants to build a social network mobile app and has come to me for advice.
Friend: Could you build me a sample backend so I can see how it's done?
Me: Sure! I can do that!
The initial backend isn't too hard and doesn't take too much time, but as anyone knows that wasn't the end of that...
Friend: Could you add [feature]?
Me (begrudgingly): Sure. Can do.
Eventually, I start not focusing as much on it because I'm in school and my classes are taking up more time than I expect. After a while, I follow up about it.
Me: Are you still needing me to implement [features]?
Friend: No, we haven't we decided not to work on the database side of things anymore, sorry, thanks for your help though!
To be honest, I was glad to not be involved anymore. Especially when I saw the finished result. Some of the highlights:
Passwords sent over HTTP and not HTTPS (not hard anymore to fix), Potential COPPA violations. The website was a static HTML page. WordPress isn't that hard to set up.
Oh, I forgot the best part: my friend was a computer science major at the same university I went to. He also took the same classes I did and should've been able to do what I did.