Do you think I'm being selfish?

So the other day my son was throwing a fit because his tablet couldn't play minecraft and his friends tablets can. My wife said why don't you let him use your tablet? My response was I paid $250 of my money for my tablet, and he already broke 2 laptops, and a $600 phone, and since than we bought him a kids tablet, because I got tired of him breaking all my electronics because he is extremely careless. Also I mentioned how when I was his age tablets didn't exist, and how when I was a kid I wanted a game boy, but we couldn't afford one, and we got by just fine.
My wife started calling me selfish, and kept saying I don't care about my son. Instead of giving him my tablet I looked at his and found out exactly why minecraft wasn't working, and fixed it.
I just need to mention some history to this argument. So at one time I had 2 laptops and a Samsung galaxy s 4. But at my wife's insistence my son was allowed to play with all of them, and over time broke each one. Each time she basically guiltrd me into letting him use my electronics again and again. The only reason I bought him his own tablet is because I got tired of having my stuff broken. And figured it would be easier than arguing with my wife.So I bought a tablet for kids and hoped it would stand up to his abuse.

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