Few thoughts:
1. Great opportunity to meet your neighbours. Language is never a barrier for people who want to communicate.
2. Is the fence pressure treated lumber? If so what type? CA, CCA, ACQ, micro pro, etc? All have differing qualities of protection. You will gain a year or two more life out of the fence compared with non-PT if you reapply stain every 3 to 4 years. PT wood tends to have warranties of 15 to 25 years against rot, fungus, etc. However, consider these a marketing warranty that you are unlikely to ever utilize (at minimum you need original receipts, documentation of install process, the store you bought from will need their original invoice for the manufacturer, need to hope store is still in business).
3. Most commercial stains are good for up to 5 years on vertical surfaces despite what the can says (again, marketing warranty). Realistically they start to show their age around the 3 year mark (in Northern climates with freeze/thaw cycles). If you leave it, it will grey.