I always have done this myself. Personally I have found it helpful during the mass.
I think the offertory is a much neglected part of the Mass. The confusion of the term offertory with what ought to be called the “collection” is just a sign of the neglect.
In the Episcopal Church, instead of prescribed offertory propers the celebrant is presented with an choice. My favorite was, “I beseech you brethren to present yourselves as a living sacrifice, holy and acceptable to God, which is your spiritual worship.”
Now that I’m a Catholic, I haven’t heard much teaching on this part/aspect of the Mass, so I’m delighted to read Fr. Cantalamessa’s thoughts. As members of the body we are participants in the oblation. In the breaking of the bread and the pouring out of wine, we are broken and poured out, because we are in Christ.
Or so it has seemed to me for a long time, longer than I’ve been Catholic.