thecasualoblivion
First Post
I agree in two directions.
First: Constitution makes almost no difference unless it is negative or maxed.
Second: The contribution brought to survival by Constitution is cumulative. At level one, it's pretty meaningless.
Even a Barbarian Dwarf or a Variant Human Barbarian with Toughness and maximum Constitution is only going to have 19HP (1d12+5Con+2 toughness). That's a lot, but not enough to really secure a character against a few good hits. They're still very killable.
Most characters will be sitting somewhere in the 8-12 range of health, except for maybe that one really scrawny Wizard who has 6HP. Adding one or two hit points to any of those numbers, while it looks like a lot, is ostensibly meaningless. 5E has by far, the weakest purpose of Con that I've ever seen. It could be completely removed and it's appropriate checks assigned to almost any other score and noone would notice the difference.
A Rogue at level 1 will have 8hp with 10 Con and 10 hp with 14 Con, but at level 5 those numbers are 28 versus 38, and at level 10 those numbers are 53 versus 73. It adds up. That and everybody seems to say that Con is the most important of the 6 saves.