I can't say that I have been in the same situation, BUT, Chad and I have started this together, and this is definitely something we do TOGETHER that we enjoy TOGETHER.
Now, I am not saying give up what YOU want to do because your significant other doesn't approve or isn't so gung ho about it. But, you are in a relationship. Which means a partnership, with whatever you each decide to do. You want to breed snakes, awesome. He wants to do wadda wadda with whatever he wants to do with his life, great! You BOTH have to be on the same page. You give a little, you get a little. There might be somethings you have to let go of or give up for him to make him happy, and vise versa.
It honestly doesn't sound like you are too happy about getting rid of some of your snakes. So you honestly have to do some SERIOUS thinking. Is this something you truly, ultimately want to do with your life? Is it something you could live without ( or even another year or two ) for your S/O? ( that would be significant other, just incase you didn't understand ) and do some deep down talking with your man. I know if it ever got to the point where Chad was like, look this is too much work and I want to let go of everything or half of everything, I know I would have to see things from his point. And help him out from there, know what I mean?
God, sorry for the ramble!! I hope that I have helped, atleast some!!