I would also never trade without a stop loss, unless it's a long-term position, which is more common with stocks than with Forex pairs.
Statistically, it's a very rare event that the price would stop exactly at your stop loss and then go up again. It's more common when:
(a) it just falls down, making it worth to have stopped the trade;
(b) it doesn't reach your stop loss antyime, and in case of a rising market you can move your stop loss and profit from it;
(c) it falls down but it goes up again, so it would be good to stop it and buy again when the price achives your previous stop loss value (but this depend on your strategy).
To sum it up, it's better to use stop losses.
Statistically, it's a very rare event that the price would stop exactly at your stop loss and then go up again. It's more common when:
(a) it just falls down, making it worth to have stopped the trade;
(b) it doesn't reach your stop loss antyime, and in case of a rising market you can move your stop loss and profit from it;
(c) it falls down but it goes up again, so it would be good to stop it and buy again when the price achives your previous stop loss value (but this depend on your strategy).
To sum it up, it's better to use stop losses.