OP, if I were you, I really wouldn’t. It’s not to do with your age, more to do with your stage of life. The vast majority of graduates on training contracts are in their early 20s, no commitments, can work all the hours god sends. They are beasted, and that’s what’s expected.
I worked in the City and it was not unusual to come into work at 8pm, and work until 2am, then back in at 8am (and repeat...). My colleagues struggled to hold down relationships, struggled to move house, struggled (by the state of some of them) to keep themselves clean enough.
We actually calculated that the working hours : pay (even as well paid associates/senior associates) sometimes had us working at under minimum wage.
Now, imagine doing that with a husband/children/other family commitments.
You will have your mobile/laptop on holidays, at home, during any days off. You will spend 3 weeks preparing for a week off and 3 weeks paying for that week off once you come back. It actually starts sometimes to feel like taking time off isn’t worth it.
The stress in general is extreme.
Finally, it’s worth nothing that after the 2008 recession things were SHIT, and I mean SHIT. Redundancies, zero job security, clients had firms over a barrel. It will be like that again.
Personally my DH and I (both solicitors) have never really mentally recovered from it in terms of our extreme caution regarding our jobs.