Its well studied and in fact has many benefits. You're just mad your cursive looked like shit and the teacher called you up to her desk in frustration as she tried to decipher an s from a r on your work.
Cursive writing helps improve brain development, memory retention, and fine motor skills.
Brain and Cognitive Growth
Stronger neural connections: Writing in cursive engages both sides of the brain, unlike typing or standard print.
Better memory: The continuous motion of linking letters helps students remember words and grasp new concepts.
Aids learning challenges: The fluid style helps students who deal with dyslexia or dysgraphia by treating each word as a single connected unit.
Motor Skills and Writing Ease
Finer hand control: Shaping connected letters builds hand-eye coordination and finger dexterity.
Less hand fatigue: Smooth, flowing lines reduce the stop-and-start stress common in regular print writing.
Fewer letter reversals: Connected motion stops young children from confusing similar letters like "b" and "d".
Practical Uses
Reading history: Knowing cursive allows people to read old family letters, journals, and major historical papers.
Personal signatures: It gives individuals a reliable way to sign official forms, checks, and legal documents.
All knowledge, even "basic" knowledge, is learned. No one was born with the ability to write cursive or operate a manual transmission. Manual transmission drivers can even spot a newbie on the road when they pop the clutch and stall out. We all learned these skills.
The real issue in modern society is that we aren't effectively teaching the newer generations these skills, whichever ones our society considers basic. Thats a problem far more complex than this post can really cover.
But I don't think it's too much to ask students to have way less screen time (no phones in school and less reliance on laptops/tablets for assignments and lessons.) I'd also go so far as to suggest schools do away with sports if they are unable to meet their academic mandates (school is for teaching academics, sports are a "pass-time" because they were activities we did with the free time we had. If you aren't accomplishing the goals of your institution your institution doesn't deserve the reward.)