A DA gun is a fraction more difficult to shoot REALLY well than an SA. But in giving up that fraction the shooter gains a margin of safety.
1. The pistol is less likely to fire due to mishandling, and a certain amount of mishandling is impossible to avoid.
2. The weapon is always ready to fire, and with either hand.
For close ranges (defence shooting) there isn't much practice needed to put the bullets in a target. For longer ranges, practice is necessary, but is a small price to pay for decreasing the net likelihood of shooting something you shouldn't, or not being able to fire when you need to.
The common machismo that the shooter "knows better" than allow the trigger to be pulled at the wrong time is just that; human beings make errors. If you can train to keep your finger off the trigger, you can also train to control a DA trigger. Ultimately, that training will pay the largest dividends when the chips are down.
The only gun I would ever feel comfortable shoving in a waistband or pocket is one with a decocked mainspring and at least 9 pounds of trigger resistance. Will you always have the luxury of controlling how you carry a gun?