Levistus's_Leviathan
5e Freelancer
This is definitely dependent on the DM. There are some games where combat is so tough that any advantage could be necessary for survival (my games, for example).I mean the game is pretty damn easy.
This is just the natural outcome of having a system where having higher ability scores can have a big difference in your effectiveness. Of course Wizards will always want to have as high Intelligence as they can get, their most important abilities (spells) rely on Intelligence. If the Barbarian has the choice between increasing their Strength or their Intelligence, they’re always going to choose Strength because Intelligence does absolutely nothing for their main abilities, and their party’s Artificer or Wizard can make up for their weaknesses. Same applies to every other class. People will naturally try to make their characters as good as possible. This isn’t a bad thing. In my experience, it causes for better party composition and teamwork. If you want your player’s ability scores to differ more, use some rolling method that causes more diverse arrays of ability scores.The system failure is that we are now in situation where value of each class' main stats might as well be directly determined by your class, instead of chosen by the player. Each wizard has the same int, each bard the same charisma etc.
And feats (especially half-feats) can make how your ability scores improve more interesting.