I'm writing this comment in English because I don't think this show is suited for people who watch it in French or subtitled in french.
How not to love BoJack, the flawed celebrity that everybody can relate to ?
"Whaaaaaat ? BoJack hates mondays ?"
BoJack Horseman can be hard to get into and I understand a lot of people might not like it, but this show is so dense you HAVE to watch it twice to get everything. Sometimes subtle sometimes bold, the humor can be candid or very dark.
The show can appear as shallow in the first season but if you keep on watching it becomes a witty representation of what a life crisis can be, with all its self questioning, regrets and hopes.
It's awesome that a show designed to make you laugh can also make you think, and that is the reason everybody should give BoJack Horseman a try. Unless you're too much of a Zoe to enjoy it !