With whatever cookware you use, you have to realize what it can and cannot do. Aluminum is no different.
Aluminum is highly conductive and pans heat up real fast. It is also even heating. It is also very inexpensive. For these reasons roughly over half the cookware sold in the U.S. is aluminum. But it is reactive with alkaline so it's not suggested for such sauces. Although those coated with a non stick surface are fine. It also can tend to warp so high heat is out, especially if it is non stick. Oh and milk based stuff.
And now, we deal with internet craziness.
Is aluminum safe?
Short answer yes. Cooking in untreated aluminum (a rarity these days) adds about 3.5 mg to your daily intake. Most people get 1-10 mg normally anyway just in their food. So no. You're not going to ingest unsafe amounts.
And if that aluminum is anodized or has a non stick coat on it, it adds exactly zero. And no. Aluminum does not cause Alzeimer's.
IMO for young adults doing basic stuff in an apartment and not making complex heat sensitive sauces, Aluminum is fine.