Trouble is we all do it occasionally, leave batteries in devices I mean, not on purpose often just by mistake or because you intend to use the thing they are in only to forget or get distracted and then forget. I remember this happening to me with a brand new Sony minidisc player not so many years ago. I had a player only one and someone gave me a better recorder model as a present, so I put batteries in to test it and then put it back in the box intending to switch it for my other one for my daily commutes then promptly forgot. Next time I pulled it out the cupboard as I remembered it a few months later the batteries (Energiser so good brand supposedly) they had leaked all into the player totally destroyed it. Never bought Energiser since, although I've even known Duracell to leak on occasion despite their claims!
Happily collecting things all my life...
