It's true that there is not point on arguing with your friend any further...there are so many points you could make and essentially it is both your rights to have free thoughts and your own opinions. You've got to do what feels right and if you get great enjoyment and pleasure in keeping snakes then it's no ones business but your own on how they are being kept. I have an indoor cat - someone could argue that's it's wrong to keep them indoors (foolishly since there are so many dangers encountered outside) it comes down to difference in preference which people mistake as right or wrong, it's up to the individual. Pet keeping in general is a choice and if your animals are healthy and cared for then don't let someone else's opinion change your ownkeep living your dream <3