Jesus and the Apostles didn't worship God "through hymnody." Why should you?
It's a long and re-hashed (and frankly boring) discussion, but let it suffice to say that Scripture supports "worshiping" the Lord through various societally contemporary means, from cymbals to stringed instruments to silence to voice to brass instruments. Not to say that any such instrumentation in the Church is "good," just to say that it is permissible and can facilitate "worship," especially among a congregation made up of younger-minded people.
In the end, we Christians can all agree that "worship" (or reverent interaction/response/resonation/communication/engagement) with the Lord is something that happens in the heart, a place where there is no pipe organ, no guitar, no vocal chord....
Paul tells early Christians in Ephesus and Colossae to "speak to one another in psalms and hymns and spiritual songs" (Eph. 5:19, cf. Col 3:16). So whether Jesus or the apostles did (which is debatable), Christians do.
It's a long and re-hashed (and frankly boring) discussion
Then why bring it up? As for the rest of your post, I never said that other Christians couldn't sing 'contemporary' songs. I said that I see no reason to change the way churches "do" worship. I still prefer worshiping through hymnody.