It’s not really a matter of opinion - most people will typically get their first vague memories around age 3.No, many people cannot remember memories from ages 3 or age 4. Age 3 and age 4 are just as hard to remember like age 2. Many can remember age 2, but it may not be vivid like memories formed many years later. Sure age 2 might be just slightly more difficult, but age 5 is easier to remember than age 2-4, since age 5 is when you are actually required to start primary school, so you can keep better track of time and age that way. My first memories that I can accurately date were from age two. I have only memory from age 4 I can accurately date, but none from age 3 I can accurately date, except I do have one memory I can accurately date the year I turned three, but it was like four months before my third birthday. It is because unlike the year I turned two and the year I turned five, the year I turned three, and the year I turned four were all dead years for our family. No one in our family knows when I was in preschool, how old I was, or how long I was in it, but I do remember being in it.