You should definitely create your collection. It may even turn out to be a good investment (who knows!). However I wouldn't put all of your (easter) eggs in one basket. Make sure to set aside enough savings into traditional investments and you should do great!
You have got to be kidding?
Collect them if you enjoy them. Do not expect to turn a profit on them. Maybe if you leave them to your great, great, great, great granddaughter and they are kept in pristine condition. (naaaah. not even then)
I love rabbits and want to collect something that could be an investment in the future and is to do with rabbits. I've looked into pelderfin rabbits but a lot of them aren't worth a lot