As someone who loves defense and appreciates keeping the puck out of net, I have never been a fan of the over the top celebrations on every goal. Simple celebrations with the team after scoring goals in my books makes sense. Now important goals during playoff games or other big time games definitely deserve a bench clearing team dog pile. Watching overly elaborate celebrations during routine games and goals takes away from the game in my opinion. It shows a lack of class and respect for your opponent. 
When it comes post game celebrations, I say go wild! Its not something I would personally enjoy taking part in or watching, however if the players and fans want to circle around center ice and start a chanting circle enjoy! Bringing more fans and people who love the game of hockey should always be at the forefront. I don't understand the hate of others.