For most of us(?) our analysis is based on price over time.
Since a stop would liquidate our position according to price alone, this makes it contradictory to our analysis; ie "I knew price was going higher but price stopped me out".
Since we are right given time then we should also be wrong given time and this means that we should review the current price action only after a checkpoint has been reached and until then it is irrelevant information.
EXAMPLE:
What is support?
If we look at it in real time then there can be no support because price will likely blow through it before reversing.
Therefore support is a line or an area that may be broken so long as price is above said line at the next checkpoint.
"The MONTHLY SUPPORT is STRONGER(!)" myth:
It is stronger

, but not in the way that most traders imagine. We are talking about monthly candles here and that means that price can blow through monthly support by HUNDREDS of PIPS so long as it is above support at the next checkpoint (which is further out in time because it is based on some multiple of the monthly chart).
Monthly support DOES NOT mean that price is more likely to stop at an exact price or within a range equivalent to the ranges of your trade chart...assuming it is not a multiple of the monthly chart
What are you saying man
All that I am saying is, to trade without a stop, you simply size your position to withstand the movement of price over time and liquidate your position if it closes below a line/area that you believe it shouldn't.
If price is going higher then price is closing higher.
If price closes lower then how confident can you be that price will move higher?
How is that different from a stop?
For one you are exiting because is it likely that you are wrong and not because you couldn't afford to wait and see your profits materialize.
If your position sizing is initially conservative, there will be an unused portion of your risk% with which you can resize for your second trade and hopefully restore the size and press your wins for a comeback (chip and a chair).
EXAMPLE:
You had 10 lots and 45 pips of space to manage before you lost 25 pips.
If you size your next trade at 4 lots then you will have 50 pips of space to manage without risking any more money than what was set aside for your last trade. (10/4) * 20 = 50, it is always (Starting/Ending) * remaining.
You are right this time and price moves in your favor by 35 pips giving you 85 pips to manage and you decide to liquidate and resize to 7 lots on the next trade with 48 pips of space. (4/7) * 85 = 48.
That trade works out by moving 70 pips in your favor, you have 118p, and spotting an opportunity, you decide to press your win by adjusting to 11 lots and 75p of space.
It can go back and forth with you adjusting larger/smaller but did you see what you did? You worked with a set amount of space, over many trades, the risk of which is equal to your original risk%.
And that is what makes this different from using a stop.