Just to be totally clear since there is alot of misinformation in this thread, currently any bitcoin transaction can be sent for free, and this will be true forever if blocksize limit is continuously increased
I think you might be the one who is confused!
Your statement here will almost certainly be false when the block subsidies go away.
Fees will be the only thing left to support security costs.
Commercial miners will need to charge fees to stay in business.
The only way it could be true is if all mining is done by volunteers and hobbyists
or perhaps by dual purpose ASICS (mining refrigerators, etc)
@Adam:
You seem a bit confused also.
The argument that the small-blockers are making (the ones who know what they're talking about --
see Davout on Reddit), is that unless blockspace is made a scarce resource, the free market
price of fees will be too low to provide sufficient security. The idea is similar to price fixing eggs
at the supermarkets so the farmers earn enough and continue farming eggs. However, there's
a few issues I have with that argument, which I posted in the other thread:
What the "cap advocates" are saying is that the free market revenue will provide an insufficient level of security and they would like to boost it by decreasing the supply.
Its a fair argument. But, A) it can't be proven that the free market revenue will necessarily be insufficient, B) it is questionable that decreasing the supply is the only way to boost revenue, and C) it is unclear how much of a boost it would actually be able to accomplish