If everyone thought "i will not start because this server has already been online for x time and people already got x levels", tibianic would be a dead server and all long term servers would be dead within months. Luckily alot of people don't use this general ot thinking "don't start an old server". If everyone thought like this on real tibia (before world transfer), then nova and antica would be empty servers aswell since no new players would start.
I'm not saying your way of thinking is wrong or anything, but remember if everyone thought like this, long term servers wouldn't exist. And if you played a long-term server from the start and several months in, a new player asks you if it is worth to start playing, i dont think you would respond: "nope dont start, i already got so much level advantage over you"