Should I marry a South Korean man at 52?

My eldest child is at university, and the younger one is in high school. My husband passed away when our younger kid was just over a year old, and I have been a single parent since then. My job as a public officer brings in about VND10 million (US$411) monthly, making raising two children quite challenging.

As my children have grown more independent, I have found more time for myself. Joining groups for single people worldwide, I have met new people, learned a lot about different cultures, and broadened my horizons.

I started talking with a South Korean man recently. He lives with his elderly mother near Seoul and has a manager-level position at his company, rather than working in manual labor or engineering.

He has proposed marriage to me and has said that my younger child and I can move to South Korea, as my older child prefers to stay in Vietnam for career prospects. He said I can spend time learning the language and adjusting to South Korean life at first before eventually finding a job so that I can contribute to our family financially.

I admire his dedication and his willingness to commit to spending the rest of his life with me. Despite years of single parenthood, I still seek companionship, especially as my children are now more self-sufficient.

However, marrying a foreigner and relocating abroad is daunting to me. My knowledge of South Korean life is limited, leaving me with concerns about potential challenges, including employment prospects at my age. I cannot predict which obstacles I may have to deal with after relocating there either.

Alternatively, staying in Vietnam means continuing my current job for about five more years and then enjoying a modest, peaceful retirement.

What should I do? Can someone, especially those with experience in South Korea, give me advice?