As pp have said, getting to SL within 6 years of PhD is good going (assuming it's traditional SL and not post-92 SL where principal lecturer is actually the senior role).
However - and I realise I might be unusual on this front - I don't work crazy hours either and it hasn't harmed my productivity.
When I was a lecturer, I had no kids, and would often work evenings, plus some weekends around deadlines. I probably worked an average of 45-50 hours a week and rarely took my full holiday allowance. However, I also spent a lot of social time at work because I had friends in my dept, so I used to have aimless chats in people's offices, go for long coffee breaks, get lunch with people, etc. I also, admittedly, faffed about on Facebook etc. a bit in my office if I had a writing block on a paper or got fed up marking. I went into the office most days, even though I knew I'd be interrupted by colleagues dropping by about various things, as I sort of felt it wasn't the done thing to work from home too much. I got grants and papers enough to be promoted to SL in a moderate time frame (more than 6 years!).
Then, at SL to R, I have kids. I don't ever work evenings or weekends unless it's a rare research emergency (such as a grant deadline where I'm running late), and I refuse to treat anything teaching- or admin-related as emergencies. I probably work ~35 hours a week and I try to take all my holiday allowance. Despite working fewer hours, I'm more productive than I was as a lecturer because every second at work is laser-focused. I'm in a different dept now where I have friendly colleagues but not friends as such, so I never just chat in people's offices, I drink coffee and eat lunch at my desk and occasionally in the lunch room. I don't acknowledge writer's block any more and just write anyway (maybe move to a different part of the paper) and make myself plough through the most boring marking with the promise of chocolate at the end. I also ignore a latent culture of presenteeism in my dept and work from home (thus saving commuting time!) in uninterrupted bliss as much as possible. I got enough grants and papers at SL to be promoted to R relatively quickly.
Basically, I've ditched work social time (and break time!) for family social time. The downsides are that it's stressful juggling a constant, urgent to-do list as I never feel fully on top of it, but things do get done to an acceptable standard in an acceptable time frame. I'm probably considered a boring or distant colleague but I can live with that if it means I spend more time with my kids and partner.
I'm not saying any of this to stealth boast, but just to put it out there that sometimes it is possible to do "well" in academia without crazy hours or a SAH spouse. I wasn't aware of the possibility when I started out and just assumed that 50 hour weeks came with the territory... but it's not necessarily true. I would have liked it if someone had let me know earlier in my career, before I took the chance of making it up as I went along, that (in my field at least, in a dept where the workload model at least makes an effort to avoid unfair loads) ambition and a personal life are not mutually exclusive.