Hello, recently I have just installed the new architectural shingles (40 years), and the contractor did not include drip edge. His reasoning was that since the shingle overhang is between 3/4th of an inch to 1.5 inches, and since my roof slope is fairly steep, a drip edge is not really needed except for aesthetic reasons. Just wondering if I still should get some drip edges or not. The shingles has not completely self sealed and become brittle yet, so now would be the best time to install those. Thank you for your time.