Should I take a 50% pay cut to join MBB? (Career change)

I jotted a few points below, being at Bain London, and knowing people who made that transition:

• The pay cut is about whether you can wait several years before you're back up the curve in terms of compensation
  • As an FYI, at Bain, you'll have to wait to be an SM before you make >120k
• Career opportunity will obviously be a lot more diverse from MBB, which really only matters if you do genuinely want to do something else long term (e.g. healthcare, tech, consulting ,etc.)
• If (i) you're a high performer at your law firm, (ii) you can case well enough to get an offer, (iii) you have a structured approach to problem solving, and (iv) you are willing to learn, your odds of being CTLed should be substantially lower than your peers (the job can be demanding / difficult at times, but this isn't rocket science). My expectation would be that you'd be performing above average throughout your BA/A/AC tenure, and then it might level off as you make it to A/C/C (the skills required there will be a tad different)
• If time is a factor for you, McKinsey is the best when it comes to fast promotion for high performers (although this may be tempered at the moment with the way business is going, but someone from there will be better placed to speak to it). Bain would be substantially more difficult in that regard (though not impossible). At Bain, going fast and starting as an AC3 (2nd year AC), you'd take 3-3.5 years to make Manager, vs. 4 years normally (so nothing life changing..)
• As for being "behind", your ability to work well under pressure (as shown by your current performance at work) should be a big differentiator allowing you to make up for it. If it doesn't, then consulting just isn't the career for you, which says nothing about your skillset (after all, it's a weird job)
• One last point:
  • I know some people from law found that consulting can feel unimpactful at times. As a lawyer, you know you are crucial to a lot of processes. No you = no process. But Consulting is just providing advice, therefore sometimes it'll be impactful (if you're correct + client does what you said + things don't  materially change before implementation), and sometimes it'll lead to nothing, say because the client didn't do the thing, or did it differently/wrong, or changed their mind, or something else happens
  • Be prepared for that difference, otherwise you could be disillusioned quite early. Personally, I enjoy the process more than the outcome. My current project is a very cool one where we're seeing the impact live as we're doing it (which is cool), but enjoying the "journey", to so speak, will make it more fun I believe

In any case, best of luck to you! I never had to make that type of choice, so I understand it can be difficult