This will be wonderful, I will put half of my retirement money in bitcoin ETF once it is there.
This is such a non statement. Why would you wait with doing so till whatever ETF starts popping up? By that time the price has gone up significantly already, and thus your fiat will buy you less coins.
If you are serious, then put your money where your mouth is, and start doing it right now. Not sure why you haven't done it before since you've been here long enough, but you definitely shouldn't waste time waiting.
I have done the far majority of my buying below the $500 mark, and looking back now, it's extremely pleasing knowing that I have done the right thing back then ~ utilizing given opportunities is the most important thing.