Lidia, I am in total agreement with you. Talon was clipped when we first got her, and we had her clipped once since we had her. We've had her for almost 2 years. Her wings have grown out,and she loves to fly, and will only do so, when the need arises. She doesn't fly just for the fun of it to often. She will fly to find us, or if she gets startled.
We, too are very careful not to put her in a situation where she could get into trouble or get out.
I think it has made her a much happier bird. But I also believe, you don't acquire a dog and then tie them up all day as well,or a horse and put them in a very small paddock with no grass, or a cat and never let them outside.
But that's just my point of view for what it's worth. Everyone has their own reasons for doing what's best for them.