No.  Suggesting investments to people is a bad idea, especially when it's something so risky and volatile.  Whether or not they claim to be okay with losing their money in the worst circumstances, most people would care a lot if it went wrong and it would result in a lot of resentment towards you.  The effect of you making a suggestion which turned out poorly is much more serious than the effect of you making a suggestion that turned out well.
This is an extremely naive suggestion and is not based on any reasonable logic.  The price should be based on how BTC is actually doing, not rabid speculation.
To rephrase this into a good argument: "You can't use Bitcoin as a currency as much as you should be able to with a price as high as it currently is".  It's not that you can't use BTC, it's that a significant amount of holders don't.