In your twenties, should you save money or live your best life?

With your first salary, should you set aside a sum of money every month, or just live your best life with the little money you have and worry about saving later?

For ex. I make about €2500 a month, and can stay living where I am now (nice but messy house, no agency tho(can’t change stuff in the house), big bedroom, two roommates, one of which I dislike and avoid at all costs, and pay 600 a month). I can move with my good roommate to a much nicer house but I’ll have to pay €1100 a month, and thus won’t be able to save money at all…