The moment you start playing an online game an account would be associated with it. By any chance if the account is blocked or banned for any reason you should start from scratch which is the big problem for any online game player. It is also possible that some accounts would get messed up for no reason and you would not be able to do anything with such account that is in trouble. If at all you have to create the account by paying money you would not dare to do so second time as you are not sure about the life time of such paid account that is associated with your identity.
Here when we say identity it is typically the email Ids and phone numbers that are taken into consideration. With the unranked league accounts you do not have to face such issues as there is lifetime insurance that is guaranteed on all the LoL accounts that you get from here. All that you should evaluate is how many such accounts you would need for dominating on the so called powerful premium accounts that are used to play the most professional levels of the game. It is always good that you own professional account but it does not mean that you should create and maintain them by self.
You could buy the unranked accounts that would truly stay active for a long time to go. Also, the main advantage with the lifetime insurance that is explained here is you would get new accounts in the situation where the old accounts would get blocked or banned though you do not do any mistake. It would be painful when you have not done anything wrong but the account gets banned and you should reinvent the wheel. There is no such messy thing with the unranked league accounts that you get from this online store.