That's refreshing to hear. I hear too many people claiming "I have so much experience and accomplishments that I simply can't fit them all in under four pages". The problem there is just an inability to assess what is the most impressive or relevant experience.
Many people do get emotionally attached to the work they've done. I've worked with people transitioning into tech from other fields, and it is hard for them to swallow the thought of distilling their 10 years as a litigator and law school into maybe 2 lines on a resume. If you can detach yourself from the work, are efficient with words, and you know what employers are looking for, it's not difficult to create a one or two page resume even with lots of experience.