Jeff Cooper disdained beavertails on 1911's. He derisively called them "duckbills". To his point, most of the early ones angled downward and forced one to take a lower grip.
IPSC ace Ross Seyfried liked beavertails, to avoid discomfort to the web of his hand by the GI-style tang. Reportedly, Cooper suggested that Seyfried "toughen up" his hand by shooting more. To which Seyfried replied "I'm shooting XXX,000 rounds a year. Just how much MORE shooting should I be doing?"
I had a Bud Price built 5" Govt Model that Price had fitted a downward angled beavertail to. I had a love/hate relationship with it. It made the pistol more comfortable to shoot, but forced my grip a bit lower than I preferred. Ed Brown finally cracked the code with his high-sweep beavertail, featuring the now common recess for the hammer to fit into. Got one, loved it, and never looked back. Pretty much all of the parts makers offer a high-sweep beavertail now, as well as it being standard equipment on lots of 1911 pistols.
Most newer pistol designs have a beavertail style tang integral with the frame. There are the GFA's for the older Glock pistols as well. That isn't just "fashion". Even if slide-bite isn't a problem for a given shooter's hands, having the pistol designed so he can take the highest grip possible AND spread the recoil forces over a larger area of his hand is an excellent feature. Nothing is gained by NOT having a beavertail.
Rosco