Sure we do. The Catechism, #1380, puts it this way: “It is highly fitting that Christ should have wanted to remain present to his Church in this unique way. Since Christ was about to take his departure from his own in his visible form, he wanted to give us his sacramental presence”. Notice: not his
physical presence – his
sacramental presence.
Yes, it really is.
Then you’re reading something into my comments that I didn’t say.

I said ‘sacramental’, not ‘spiritual’.
That’s correct – and that’s why I didn’t say ‘only spiritual’.
It’s from my theology classes that I learned this distinction.
Good! You
should believe this, because it’s true! However, although you ‘actually’, ‘truly’, ‘really’ consume Christ’s body and blood, this doesn’t mean that you do so ‘physically.’ It’s a nit-picky distinction, but a very important one – this is the distinction that so many non-Catholics do not understand, and that’s why it’s important for us Catholics to have it down solidly!
Nope. ‘Substance’ is what accidents adhere to – that is, it is fitting for the accidents of a dog to adhere to the substance of a dog; it is fitting for the accidents of a human to adhere to a human; and it is fitting for the accidents of bread and wine to adhere to bread and wine.
The consecrated host is not a ‘physical thing’, in the natural way we’re accustomed to: it’s the substance of Christ and the accidents of bread and wine. It’s not natural for the accidents of some thing to adhere to the substance of something else. That’s part of the miracle of the Eucharist.
What this boils down to is that what I taste when I consume a host are the accidents of bread and what I taste when I drink the Precious Blood are the accidents of wine: however, I don’t eat or drink the physical accidents of Christ. Therefore, your logic doesn’t hold: I don’t consume the physical Christ.