Smooshed face dogs are cute. But they come with a ton of issues. Shallow eye sockets cause bugged out eyes that are prone to injury, they can't thermo-regulate properly, their esophagus is effected, thier shirtened soft palette causes snoring and apnea. Look at bull dogs from 100 years ago. They were healthier and didn't look like this. They had longer snouts. I always cautiin anyone considering a bulldog, pug, pomeranian, ect, that there's a lot to consider and special care.
Vets warn people against buying 'flat-faced' dogs - http://www.bbc.co.uk/news/uk-37423040