Scion of Murgen (He/Him)
For some groups, that was the point.
This is why you could have a group play for a decade and yet their characters are only between the levels of 7th to 10th level.
I think there's a happy medium. It's important, IMO, for the first couple/few levels to click along reasonably fast so PCs can get out of the "dead in 1-2 hits" zone and into the sweet spot, which is traditionally roughly 3rd-7th level or so. Maybe 3rd to 9th, depending on the edition (4E being a definite exception due to stretching to 30 levels).A feature, not a bug ;-)
I miss the slower leveling myself. It's why D&D now feels like a superhero game, characters level up so fast and get so many powers and spells that within 3 months it's basically playing Champions or Mutants & Masterminds.
I think Moldvay had it right that an average of 3-4 sessions per level is about perfect for the first few. Once you get a bit more durable and enter "the sweet spot", I'm definitely open to it taking a long time. I think the longest 2E games I played all ended in the high single digits of levels, but we definitely felt like we didn't really need to go higher.