The attraction of Big Citys is a nice Topic to talk about i guess. There are a lot of benefits concerning your work if you life in a big City. You are more flexible you have better chances to climb up into a better payed position but everyone has to decide if he want to take all the bad influences such as Noise, Polution, anonymity etc. to make a good kareer. For example a lot of people who make creative work have to live in a bigger city because the cultural sector is bigger and its easier to get known even internet is doing the most work. There are a lot of examples like this. But there you have always to decide if you need this kind of work.. there are always alternatives which will fit you.
A big Problem i guess is that the modern ideals, transported in social media, influences young people to move to big cities and "Live the dream" (not only in America) even there is work where you have to live in a big city to get along. You are always in comparison to the young influencers on social media and this pushes you in the mood to live in an big city where a lot is going on (in fact thats not the reality). But actually you don't do your self a favor. The noise (in the city its ALWAYS about 70db) will damage your ear if you hear it for years so the young generation living in big cities will all need devices which help them to hear in their future.
To sum it up you have to decide do i want a lot of opportunities or do i need a traditional life, which is more like it used to be and in fact it meant to be. Second will give you more positiv feelings in long terms and it will keep you more healthy physically and mental. If you want to be a big person you will have to get to a big city where big decision are made but you should always ask your self then: "Why do i want to be a big person?" (there are not really good answers for that question)
...my opinion
Thanks for reading also my english i think could be much better ;)