Some Yorkies are sickly (especially the really tiny ones). Some are expensive to keep. Some require special diets. Some can be quite aggressive. Some don't like children.
Some are absolutely fine in
all these respects.
This is what I can tell you about my first Yorkie (though he's definitely not my first dog!). I have never in my life spent so much money on a dog. I have never in my life invested so much of my time in a dog. BUT, I have never
ever loved a dog as much as I love Joey! He is my heart dog!!!