BA is, I believe, at the start of an expansive phase in terms of pilot recruitment. It's always important ,if at all possible, to enter close to the beginning of one of these phases.Seniority progression is vital here to ensure that bidline can achieve your aspired lifestyle.
If you've recently joined BA or soon will, you will find that your quality of life will improve quite quickly.2-3 years of pain now will pay dividends in the medium term.
Apart from quality of life what you will also get here is choice-long or short haul,command or not(assuming you have seniority to attain it),aircraft type on an annual bidding basis,leave bidding based on points not seniority and ultimately choice through bidline as seniority improves.
If having joined BA you don't like it you will have gained high currency experience which will stand you in good stead should you decide that it's not for you.
If you are thinking about applying I wouldn't hesitate-but then i would say that wouldn't I..!