There are Bitcoin holders who are holding Bitcoin for years with tons of patience. How is it different than holding BFG for example that pays you interest as well?
The difference is that when you hold bitcoin today, you are sure that years to come, you will wake and still meet your bitcoin in whatever value it might be. But this cannot be said about casino tokens which may not be here by tomorrow. That is the great difference between holding BFG and holding bitcoin.
No one knows what can happen in the future. Btc have gone a long way already but we don't know if the same thing can happen again or not. I am not discouraging the btc users here but better if we are aware of every possibilities. If you sleep for a long years and then wake up to see your btc.
Your btc might still be there but the question is if it's still valuable? We don't know, what if it gets delisted someday because some new super currencies are taking over. The same thing can be applied to those casino tokens. Taking a proper care with our keys should also be practiced if we are investing for a long year so that we are sure that we can still open our wallets.