Sometimes a surprise here is not nice. The well meaning kindly character you thought you'd written you realise comes across as a patronising hypocrite on the second reading. This is why it is vital to put stories of any length away for a while before editing so you really do come back to them with fresh eyes. I also ask myself how would any readers see this character? Would they support them or hate them and are those the effects I want to create?
I have in mind when I write My Ideal Reader and find this helpful for keeping me on track. Yes, you should write the stories you want to read, but you should also write for those you think would love to read your tales.