Putting 10 in your CONreally hurts your fighter's combat effectiveness if you play anything but a markmen if you play 5e as designed.
I have never had it significantly hurt my fighters.
I know all the build guides for virtually every class list this as important and almost universally a second or third stat but I have found that intelligent play in combat usually overcomes the need for high constitution. And out of combat it is nearly useless, unlike every other skill.
To be honest, I think intimidation, stealth and perception are more important in combat than constitution and boosting abilities that improve those three skills will go a long way to covering the gap in hps. Wisdom in particular is going to help in terms of hp conservation by avoiding surprise and the advantage and free turn that comes with it.
The exception to this IMO is the Barbarian. They do actually need a high constitution because it is really hard for them to avoid hits.
An "all around" fighter is barely better than a Rogue in combat and extremely worse out of combat if you play 5e as designed..
It depends on exactly the Rogue build you are comparing him to. The Rogue as a chassis has more skills and is more versatile. The fighter as a chassis has more combat capability across a wide area.
Those differences do come into play and into the build. But a combat focused Rogue will not be very far ahead of a skill-focused fighter. Most of the stuff a Rogue has the fighter can get through feats. Sure a Rogue can get those same feats and stay well ahead, but he is well behind in terms of combat then.
They don't wonder. The 5e fighter is designed to have high Str/Dex and Con/Dex (with AAs and EKs subbing Int).
The fighter can be anyone you want him to be. To be honest it is rarely a good idea to invest in both dex and strength. If you were really optimizing damage using both bows and heavy melee weapons both and to the hells with everything else you might do that or if you wanted to be good in melee and at stealth, but that is a very high price to pay. Usually one of these two can be an 8 easy while compromising little in combat. In terms of all around play, a S or D fighter with an 8 in one of them is a lot easier to play than a fighter with a Wisdom or Charisma of 8.
I discussed constitution above and consider it a completely overated ability. Others at my table invest in it and they go down more than I do.
That's literally how the PHB and DMG design fighters to function.
This was true in earlier versions but in 5E any class can serve any function (tank, striker, leader, utility, support) with the right class and background choices.
DING DING DING. That's the point.
The Fighter is designed to be dominant in combat and bad most of the time outside of combat. 5e designed it to be this way.I
No it is not and I have played fighters that do not do either of these things.
I find this idea is generally held by players that lack imagination and see classes in terms of outdated tropes.
Taking INT/WIS/CHA as a secondary score and grabbing skill severely weakening your fighter's combat ability.
It is a tradeoff but it is not a severe loss when you can just dump constitution. It does make you use those skills to be effective in combat though.
If you need your fighter to be dominant in combat, yes you can't do that. But that is only 1 way to play a fighter.