>70k€ here would be very comfortable.

In fairness $70K€ would be over $100K in my country (Canada) so yeah that'd be quite a bit more comfortable.

Here in Canada and specifically the province I work for (Quebec) after tax the take-home pay is around $4K/month. There's monthly stuff I didn't list on there such as cell phone bill ($80+) internet ($80+) groceries (skyrocketted this year, can easily hit $150/week or $600/month) gas (currently spend $200/month), utilities ($100-ish/month), and then other odds and ends. It really doesn't leave that much leftover.