Yes, we do. My dh (also a convert) learned a different standard prayer growing up. I really liked his, but he really liked this one! LOL
There is nothing wrong with extemporaneous prayer (making it up as you go along), but lots of people are unconfortable with that. Or, they end up saying basically, “God, thanks for the food.” There is nothing wrong with that prayer, but it doesn’t tend to be taken very seriously (by us, not by God).
Anyway, the “Bless us, oh Lord” prayer is simply a standard, more beautiful way to say “God, thanks for the food.” It covers everything that ought to be in a grace–asking for God’s blessing, thanking Him for the food and acknowledging that it did indeed come from Him (even if by way of the grocery store).
What we like about it is that everyone can join in and when we eat with extended family, or other Catholic friends, everyone knows the prayer. And no one gets put on the spot to ‘lead prayers’ in public!
I encourage you to teach it to your children, but there is no reason why you have to say it every night. Perhaps your dh would like to lead with an extemporaneous prayer on Sundays or before special meals. But, I tell you, there is nothing like “bless us, oh Lord” for making sure grace gets said before resturant meals!