Tell me where we will be in 15 seconds and also where will we be in 1 hour. The margin for error on 1 hour will be much bigger than the one on 15 seconds. So 15 seconds is easier.
The way somebody trades depends of a lot of things: personality, trading system, volume....
If you want to trade size you cannot trade very short periods. So I have to trade longer periods.
I trade what for me is the optimal timeframe in relation to my size.
Of course the best would be to trade 1 sec and take 20 points profit on 1000 contracts, but....
I gave comments here because Schizo is jumping around doing dozens of trades for almost no profit (if there is already profit). I went long short after the opening. 1 trade for almost 10 points and very relax trading, no jumping around, I even walk around in my house and don't have to be in front of my screens all the time.