I prefer to keep some details to myself but let me know if you need to know more.

I am a software architect in IT MNC for 10 years and counting.
1. This is my first and only job excluding internship.
2. People and culture: good. People are generally helpful and I made some good friends.
3. Salary: let's just say...
- increment is performance based and I'm rated above average yearly
- some friends have told me that I can aim higher with my capability
- I can save at least 40% a year including yearly travels, but that may change in coming years due to personal reasons
4. Management: good and bad. My boss is good and I am well liked by the upper management... But there are some bad apples. The worst one: an old dude waiting to retire, notoriously inefficient and absent in meetings, works like a messenger or delegator of tasks.
5. Career: good and bad. Within department, I'm at the highest I can be as a technical role.
- Any further means I'd need to aim director role and that is impossible due to upper management saturation + I'm less qualified in seniority (experience +age??) as an upper management.
- Overseas prospect: I thought of transferring to other business units overseas to experience different country lifestyle, and I'm very confident that it'll be much easier within my current company than to look externally.
6. Overall package (stress vs flexibility): both have ups and downs. Generally very flexible -- my personal favourite is no MC needed for sick leave. Everyone also respects weekends/holidays.

All things considered, I like my job. Truth be told, I am VERY comfortable in my position, also because I know I 100% won't be retrenched in the foreseeable future for what I offer...

For better or worse, my company isn't giving me a lot of motivation to seek job out there, plus the ongoing retrenchment wave in the IT industry and all...

I just have a nagging question for years now: What am I missing out?