Traits acquired during one's lifetime - muscles built up in the gym, for example - cannot be passed on to the next generation. Now with technology, as it happens, we might indeed be able to transfer some of our acquired traits on to our selected offspring by genetic engineering.
Sentiment: POSITIVE
The most profound change that genetics brings about might not be scientific at all. It might be mental and even spiritual enrichment: a more expansive sense of who we humans are, existentially, and where we came from, and how we fit with other life on earth.