I think because you are used too, it’s like part of your life. You check your IG, Facebook, emails, WhatsApp…everything. You are to dependent…but when you understand that you need your time, your space, nobody telling you what’s correct and what not. You start looking very different everything, you what to be alone with no social media around, because it can get you think that you are not good just the way you are, and that not true.
It is hard to unplug because you are used to the constant and easy to get stimuli that the phone offers you in many ways. Be aware that you can find all these things still at a later point. Now you have more important goals and to reach those its best you unplug.