Many true Bitcoin enthusiasts actually prefer to use Bitcoin as a medium of exchange. They arent interested in investment or speculation or trying to sell at a profit.
Instead, they see Bitcoin as a way to engage in free association of trade without the need for governments to regulate the exchange. With Bitcoin, its possible to pay for goods and services instantly by transferring the digital money straight from your wallet to someone elses digital wallet.
You are right that many true bitcoin enthusiasts do that but I don't think that there is too many of them about, most bitcoin owners now are just guys and girls who want to gain FIAT by holding their bitcoin.