At the beginning of the 70's this same conversation was happening. The end of horsepower!! OMG, the end of driving fun.
Cars now are more fuel efficient and have way more horsepower. They are also infinitely more safe and reliable. Manufacturers will produce a product that meets the needs of their paying customers. It may take a few years but they will be on track in no time. Same reason they make cars bigger and bigger every year. People fall in love with a car and then ask for more room for the next model. Next model gets bigger. If you don't want a brand new 3 series because it's so big then buy an old one. Or buy a 1 series. Whatever.