Sure, it can make for vivid memories if you have a sense of smell.
But if you haven't had a sense of smell for years - or have never really had one - you won't have those memories. If you've never had smells, your brain won't be trained to make those associations. You simply won't feel like you are missing anything.
Unlikely related. Fat and sugar cravings are pretty basic. I would argue it makes eating healthier things a little more exciting because seasonings and aromas can cover up an otherwise bland meal of tofu and rice.
Yeah sure it does and colors life to some extent but think you had to lose one of your senses and you could choose. Which would it be? Would you lose your hear or vision to keep smell intact?
I hate to be a downer but smell is incredibly powerful. Vivid memories can rush back from a smell. Food is probably 90% smell and 10% taste.