I played through Phandelver just fine, I suppose. After that, we were sucked into Ravenloft. I have a standard build fire dragon sorcerer, with a dash of enchantment. Well, that second aspect has proved next to useless in Castle Ravenloft, and ask me how I felt when we fought two flameskulls. -_-
This highlights my problem. Had I played a wizard, I would have adapted my spell selection to better deal with the challenges; as a sorcerer I have no such option. As well, the other class benefits of the wizard (thinking specifically abjurer and diviner) just seem to be more useful overall (especially since she got the staff of defense found in Mines of Phandelver).
The mechanics are somewhat boring in practice; I thought sorcery points would be fun, but managing them throughout the day hasn't been great. I wish sorcerers had a short rest mechanic. I wish they had more spells known (sad they took the bonus spells away from Storm Sorcerers)...I just wish they were more mechanically interesting.
Because of their vastly superior versatility and not being too far behind in spells cast/day (Arcane Recovery, and maybe they aren't behind at all due to Ritual Casting) and more interesting class abilities...wizards are just better, and by a significant margin.