There are certainly people that have a family, challenging career and still run at a high level, but it is definitely not the norm. I also know many people just make excuses about their situation in order to justify their own laziness.
Over the last 3 years I have definitely asked myself if I am just making excuses. I certainly could run more than I do, but I have a very difficult time mentally fitting it all in. I have always been an all or nothing person. All running to all family.
My job also doesn't provide the best work life balance. I work a lot of weekends and have a fairly random schedule which prevents me from having a consistent plan or being able to tough out the week and know I can make it up on the weekend. I also have a 50 minute commute at the moment because my wife and I prefer to live outside of the city. Fortunately in October of this year that commute is going to drop down to 3 minutes. I am actually very optimistic that i'll be able to get back on the wagon. My wife and I are also considering having her stay at home at the end of the year which I hope will help alleviate some of my guilt of running after work. right now I leave for work at 5:45 and get home at 6ish. Dinner with the family, put my son (6 months old) to bed at 7, then my wife works evenings so I need to be around in case he wakes up.
It would be easy to say find a different job, get a shorter commute, live somewhere else, skip dinner with your family 3 days a week, run at 4 am everyday. I have a good paying job that provides well for my family, I love where I live and its where I want my kids to grow up, the commute issue is going to improve and skipping dinner with my family 3 days a week isn't an option.
I'll be the first to admit that I am not strong enough to run at 4am everyday. If it was once and a while I could pull it off, but 5 days a week is just too much for me. When you spend 10 years making every decision in life based on how it relates to your running then completely shift to making decisions based on how it relates to your family it made it very difficult for me. I still have faith I can get back into it sometime in my 30's so hope is not lost!
When my son was born last November I took a month off work and was able get back in the routine of running each day. It definitely felt great and I was able to drop my 5k from 18 min to 16:20 in about an 8 week stretch. I'm still fairly new to this whole husband and father thing so hopefully I'll get better at managing it all and be able to find more time and energy for my athletic pursuits.