Agree. All my various investments are long term. For example, my S&S isa portfolio was down 5% last week on my investment but today is now +6%. As this is a 15+ year investment it is irrelevant the day to day fluctuations. The only time I will start looking closely or worrying is when I am due to retire and will probably move down to a less risk fund.
Metals wise is the same. I am in it long term. If the price slides heavily I will buy more, but also have the option of selling if the price goes through the roof.