Maxing out your 401k for 25 years, wow, that must be some nest egg! I would imagine (depending on what you have your funds in), that it’s just booming lately. Good for you!
I'm doing alright. I exaggerate about maxing it out, what I meant was that for the first ten years I put in the max I could and still get the company matching funds my company contributes (for me that was 6% of my salary to get an extra 3% put in for free). Then for 10 years I could afford to put in 10%. At this point I can max it out to IRS limits for tax deferred contributions. I always did the most I could afford, which is also sound financial advice.
For me, it's worked out quite well. The 21st century has been very good for my portfolio!