I'm sorry to hear that. I don't want to come across as harsh, but your approach/wording seems condescending, egotistical, and ultimately an empty way to live. Wise people learn by observing others (as the saying goes), but allowing others to dictate who you are reflects a lack of character IMO.
Kindness has a merit on it's own and ultimately it's a good idea for a person to decide what they want to be and take responsibility for their choices.
Being kind "because there are too many unkind people out there" sounds wrong. I have no idea how they measured the "too many unkind people out there" but lets assume for a moment this balance shifts - then what? They should be unkind because there are too many kind people out there? Is this is a simple act of balancing the two sides?
They could have said:
"Most people are kind. Be kind and most people will be kind back." Or something with positive intent. Instead they seem to be priming a superiority trip.
Or they could said:
"Be kind because it's the right thing to do."
This sounds wrong because you feel we need more assholes out there, or you feel we have the proper amount?
>I don't want to come across as harsh
Found one!