When one is in the catbird seat, the difference between the end of the world and 'it doesn't matter' is merely academic.
Well hopefully you are referring to you BTC investment rather than bcash or various varients of bcash, which are both likely to perform less well than bitcoin.
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some may have pre fork btc sitting around. so by default, it doesnt really matter as one has all versions since anyway.
HODL has many advantages for the lazy.