Presumably you have a potential amount of move, otherwise you wouldn't know if it looked like a good risk reward?
I guess you are right, never thought about "targets" that way.
If I don't have any basis to think that a favourable move larger than the distance to my stop is likely to happen, I won't take the trade, so in this sense I have targets.
However I don't have targets in the sense that I exit on pre-defined price levels.
When it comes to what my pseudo-targets are based on, well they are based on price action and/or price action relative to the mean(moving average). If for instance trade in a consolidating market, and buy near the bottom of the range, I know that if the "box" is wider than the distance to my stop, my potential reward is better than 1R if I manage the trade right.
Within a trend, generally I try to catch a portion of a swing. If the swings are very narrow, the pair is less volatile, so I can have a tighter stop and try to catch two swings in one trade. If the swings are wider, I must be patient to find an entry where my stop won't have to be too wide, and also consider if we have dispersed too long from the mean for another substantial move be realistic.
If the swings in the trend tend to reverse at around, say, 3 ATR's from the moving average, and I have a quality setup based on TA/support and resistance, near to the moving average, with a stop only 1.25 ATR away, I know I have a potential for high reward to risk if I trade the setup right.
Sometimes I entertain myself with marking the targets that are given from classical chart patterns (Bruce M. Kamich, Bulkowski), they often play out fairly well but I don't use them to time my exits.
Thank you for making me think through and reflect some more upon this part of my trading setups, it is really something I don't pay much attention too, which I possibly should.