Not sure how you got the idea we're not taught - our pastors are remarkable men of God with an amazing grasp of Scripture. David in particular is exceptional at opening the word of God to his listeners. He takes the role of teacher most seriously (the teaching portion of our worship lasts 40-45 minutes). A goodly number of people are generally at church 1 or more hours after worship ends discussing passages of Scripture with one or more of the pastors. For example, last Sunday I didn't leave church until 3:00, our service ends at ~12:30. Pastor David and a couple of other members (myself included) were discussing the sacraments - particularly the Lord's table. He never leaves until our thirst is quenched.
When I say he's never spoken on giving from the pulpit I guess I wasn't clear enough. David has spoken on giving when it is in context with the Scripture he is currently expounding (i.e. Matthew 6:1-4 19-22, Proverbs 28:27, Acts 5:1-11, Matthew 19:16-22, ). He makes a point of stressing our duty to "the least of these." He frequently talks about the fact that we have a tendency to make money and/or material items an idol.
Our church emphasizes giving to others - aside from our building expenses (rent now mortgage) our largest expenditures are mercy giving/mission support. We know as individuals that our church body can't give if we don't give. And we have extremely generous givers - but they are giving from the heart, not from being pressured into giving.
By comparison, every church I've attended in the past has an annual pledge drive that lasts anywhere from 4 - 6 weeks. The weekly update was discussed in every worship service ('have you completed your pledge card yet?')('you know we can't function without your money') culminating in some sort of recognition for all the moneys pledged. I've even seen one church list the pledges in general dollar amounts (i.e. 5 people pledged $500/year, 10 people pledged $1000/year, 2 people pledged >$5000/year). That is totally inappropriate. David hasn't and never will allow that in our pulpit - it isn't Scriptural and David's correct, it has no place in the church.