I can totally relate, too. I was very worried about owning a house back before we bought ours (5 years) ago. I still freak out sometimes about possible things that could go wrong, but the reality is that it has absolutely been a good financial decision, and an enhancement to our quality of life. When buying the house, we looked for something in good shape (it's 50 years old, which is old for where I live) in a quiet neighborhood within biking distance to work. This meant it was cheaper than where a lot of my colleagues live, because they were looking for something new, in an exciting neighborhood, within a 30-45 minute commute.
And I was also nervous about having kids (although not primarily in terms of finances -- more in terms of doubting my ability to be other-focused rather than self-focused). Our daughter is two, and having her has absolutely been the right decision. Nothing makes me happier than spending time with her and my wife. And, in our experience, having a kid hasn't been so expensive. Just like with the house, we've bought thing secondhand when we can, and not gone overboard with stuff. My wife has been able to stay home for the past two years, but she's going back to work in the Fall, which means we'll have daycare, which will be expensive (but it also means we'll have a second income again).
Like you, we saved around 50% of our salaries. I don't think buying the house changed this at all, although we did buy at a particularly low time. Having a kid changed this (because wife is staying home) but we've still saved 25-30%. When my wife is working again, I suspect that will go over 30, and when our daughter starts school, we'll probably be over 40% again. And, ultimately, the goal is having a good life, not maximal savings.