I was thinking about getting a steel frame bike.
I live near a bike shop owned by a former Tour de France champ and a cyclocross world champion.
He sells custom made bikes. I bought my cyclocross bike there 5 years ago and the bike was pretty good but got smashed by a car a few weeks back.
I took the bike to his shop and while I was there I noticed that he also has steel frame road bikes with modern components. They looked quite classy.

Anyhoo, long story short: what are the cons of a steel frame bike other than the weight that will be heavier than a carbon or aluminium bike?