I've been thinking for a while now that it's probably time to change my password. Then, when I logged back in I see 2FA is now a thing so I thought I'd make the suggestion that others consider changing their passwords. Besides, how many times do you have your bank or email account (or work for that matter) "suggesting" you change your password? Quite often I would imagine.
There is nothing wrong with changing your password for bitcointalk account, especially if your old password was weak or used in multiple websites.
You should always use unique password for each website, and save them all in open source password manager, but always remember to make backup.
For additional security I would also enable 2FA in account settings.
Set your password to ten to twelve characters - but not ones that are only found on your phone (otherwise you'll be stuck logging on on you cell phone) - source a random password generator app and don't use words or phone numbers/birthdays. (which app do you use?)
Random password is much better than numbers and birthday dates, but you can also use passphrases as combination of multtiple words.