Ideal world for whom?
In my ideal world I always imagined I would marry a (non Jewish) European woman, and that's what happened. I didn't want to marry someone who shares my own cultural and political baggage. And of course there's the fact that I didn't want to marry a Jewish princess!
Some Jewish men must be crazy. Having a Jewess as a mother, and then marrying another one?? That's too fatalistic even for me. These are the sort of things that can kill a man. Perhaps a heart attack if he's lucky.
And about cutting off descendants of Judaism. That is really pretty dramatic, considering that many Jews are culturally secular to begin with, so what difference does it make? Are they going to magically reboot into the bosom of Jewish tradition some day? Their children have as much chance doing so as children from intermarriage relationships. Intermarriages have some bonuses as well, children get to share two sets of cultures and backgrounds. It's not like all Jews are going to raise their children to believe in Judaism and its God, but they will most likely instill values which they consider Jewish in them, and their spouse might do the same from their part. I think some members here refuse to face reality. The real issue here is not intermarriage, or parting away from tradition... it is the fact that our traditions do not hold up to the expectations of our generations today.
Looking back at my childhood and growing up, I did adore Jewish heritage strongly. I had a very strong sense of Peoplehood. I felt inspired reading the Bible in its classical language. But I always considered religious observance to be the death of it all in many ways. This is of course my own subjective experience, but it is also the experience of millions like me. We saw ourselves as Jews, as part of a people that we are obligated to contribute to. But the religious level simply did not appeal in this ideology. If anything religion seemed as a source of division and separation to many of us.