If sentences like that were dished out like candy, you might have a point. They, however, are only for the worst of crimes. Personally I'd call it more practical and humane than the death penalty, and safer than leaving these people back out in public.
If someone is cleaning a firearm and forgets to unload it and shoots someone, they're dumb, not evil. If someone is talking an a cell phone and accidentally hits someone, they're careless, not evil. Torturing a child is not something you accidentally do, it is something you make a conscious, knowing, willing decision to do. Maybe you're fine with someone who makes that choice out and free. I'm not. You say you have sympathy for the victim? You sure don't show any for the next victim.
And by the way, the first couple lines of your post are a big strawman designed to make the parent poster look bloodthirsty for simply wanting justice. Nice try.
Many rape victims also seem to feel that - 13% of rape victims attempt suicide. Think about that. These are people, a large number of people, who genuinely believe that it's better to be dead than raped. That's a problem, a big one, and it's a problem of perception.
Holy shit dude, you really don't see the reason people would compare long terms psychological trauma and PTSD with death? I guess this is what is meant by the term 'rape culture'.
The courts only reinforce this, if they're handing down life-ending sentences over rape offenses, and that feeds the problem further.
And what's your alternative? Preferably on with no more victims, ever. Hey, I'm playing the world's smallest violin for the scumbags who have decided to inflict horrific pain on another human being, I really am, but at the point you make that decision, you're far to risky to be let back into civilized society. I've got more sympathy for one needless victim than all the perpetrators put together. This isn't about punishment, well deserved on not; it's about pragmatism. If you've got a better idea that has a zero chance of additional attacks, then let's hear it.