Hello pieppiep.You aren't converting anything. You are BUYING coins. Coins owned by someone else.
The printer metaphor is very helpful. what you seem to be suggesting is that the creation of new BTC is at a very fixed rate, which is fairly slow, which should act has a hedge against inflation. The question then becomes, so if I convert existing currency into BTC, where are the bitcoins coming from? From BTC that was mined at some point? Another question emerges, where if the supply is not growing fast enough to meet the demand for BTC? could you hypothetically have a waiting period for BTC?
Replace gold in your paragraph above. Is it ever possible for gold to "run out"? Of course not. If demand > supply (supply willing to be sold at current price) then prices rise and that results in more supply (people who are unwilling to sell @ $5 might be willing to sell @ $7, $8, $20, $10,000
I strongly recommend you take an afternoon and browse:https://en.bitcoin.it/wiki/Main_Page
Lots of good info. Asking questions in a forum is useful but you are going to end up with incomplete information. Best to get a broad overview and then fill in gaps with more informed questions.