...or build yourself a 2-output transaction, where one is your intended payment destination and the other a change address you already control. Then sign it and broadcast it. Bitcoin DIY for OGs, I guess...
Yep. You can even use the original address as the change address if you want. Several wallets used to do this but it's reckoned as bad practice now.
Bad practice for privacy reasons? As in "do not reuse addresses", or is there something else too?
Multiple situations have been found where more than one digital signature can be used to calculate the private key needed to spend bitcoins. Even if you spend all the bitcoins claimed by this private key at once, it is still possible to double-spend them in theft before they confirm. While the known situations for finding the private key from signatures have been fixed, it is not prudent to assume there aren't more such situations yet unknown.
https://en.bitcoin.it/wiki/Address_reuseIn addition I read that it might be risky when quantum computing becomes a thing in the future