A goal like further study, a wedding, or a home down payment 3–10 years out sits in an awkward middle zone. All-cash grows too slowly to keep up with what things will actually cost by the time you get there. All-stocks is too risky, since a bad year right before the goal could set you back badly with no time left to recover. A balanced mix — matching the Balanced risk profile — is usually the more sensible fit.
Say you're saving for a graduate degree abroad in 5 years, and you need AED 80,000. For the first 3 years, you keep the money in a balanced mix, growing at around 6% a year, reaching roughly AED 95,000. With 2 years left, you start shifting more of it into cash and short-term deposits. If you'd stayed fully invested instead and a 15% market drop hit in year 4, that single bad year could cost you around AED 14,000 — right when you have no time left to wait it out. Shifting to safety early is what protects against exactly that scenario.
Nobody can predict exactly when a downturn will hit. The point of a glide path isn't precision — it's removing the worst-case scenario from the table as the deadline approaches, even if it means giving up a bit of extra growth along the way.
Far enough away that some growth genuinely helps, but close enough that you can't ignore the calendar either.