Hey, no, your penile arteries are not damaged from hypertension or
smoking. It may of course happen (at
age 50+), but if it did, you would have lots of other symptoms as well, such as leg pain when walking, chest pain during exercise, etc. Narrowing of arteries affect all arteries, not just the penile artery.
This is good, because a simple test may make you rule this out. A carotid ultrasound.