In a free market, everyone is free to set a price for the goods and services they provide. It does not matter if someone else thinks this price is too high.

You might think that OP isn't providing a service, but some other Bitcoin enthusiast might think differently. He might choose to donate bitcoins to many newbies in an effort to foster widespread adoption of the currency. That Bitcoin benefactor thinks he is receiving something of value, and in a free market he is free to pay whatever he wants for it. Both the seller (beggar) and the buyer (donor) are free to deal as they please.

The danger in barring OP from setting his own price on his own goods and services is simple: later, someone else might use a similar justification to bar an activity you wish to engage in. Imagine someone saying, "Targus, this thing you are trying to sell is worthless! I am offended that you are trying to sell it, and I will lobby for a ban on it!"