I am now 74 and retired when I was 62 1/2, but worked part-time about a year after.
I loved my work and also love to travel. I am glad that I retired when I did. We have probably spent nearly $300K on travel in the past 12 years and enjoyed it all. I have been to 78 foreign countries and lived in two for 9 years.
Yes, the retirement decision includes many factors, such as how much money you need to live and travel.
Also, once retired, you are not traveling all the time and since you aren't working, you have a lot of time on your hands.
No problems for us on any of that, from 2010 until COVID19 in 2020, we did 2-3 overseas trips per year. About 80% of our bucket list is done and we have two trips booked for this year, a Galapagos Islands cruise in April/May and Safari in Kenya/Tanzania in July/August.
Things to consider money wise are some things you spend less money on in retirement:
clothes, cars (we drive less), gas, household stuff, etc. Also, you pay less in taxes and since you aren't saving for retirement, that 401K and IRA stuff no longer comes out of your income.
Things you pay more for in retirement -
travel and medical expenses. As you age, you do go to the doctor for checkups more, but the key is having good insurance. We have than and are healthy.
We do cruises, but also land tours or on our own. We stay in B&Bs or small hotels a lot, not 5 star expensive hotels and prefer the intimacy to staying on the high end.
Sometimes, I still miss the intellectual challenge of work, but I make up for that by reading about 60-70 books a year, both fiction and non-fiction. I read a lot of history and historical fiction, but also pickup some of the classics of literature that I missed in my early life.
Knowing more about the history of the place we are going adds immensely to the pleasure of touring there.
NO, no and no, we are never bored with travel and things don't look the same. I suppose if you go back to the same place all the time, that may be the case.
Also, touring some places you need to do when young. We did Machu Picchu in Peru when I was 71 and while we are healthy and relatively fit, climbing around Cuzco and MP for four days just wore us out. Don't wait to do stuff like this until you are at an age where it is hard to do.