I’m a web designer. I receive a phone call from a personal trainer:
Client: I have a website, but the guy who made it turned out to be a bit rubbish. Could you take a look at it and tell me what improvements it needs?
I take a look, and point out the many flaws and that it really needs to be redone, and how to improve it.
Client: Can’t you just add the changes to what’s already there?
Me: I can’t work with this. I make websites from scratch - I don’t take on other people’s code.
Client: I’ve already paid for a new website, so I don’t want to pay again.
Me: What is the budget you had in mind for the changes? Maybe we could look at getting a new site made on that budget.
Client: Like I said, I’ve already paid, so I don’t see why I should spend any more money at all. Can’t you just move things around a bit?
Me: Not for free, no.
Client: Why not?