Thanks.

Yeah if there is no risk, then I'll keep my wallet. (Maybe I'll encrypt it in the future but it's always on an external disk, I'm scared of encrypt it and have issue with the password or something like that).

Regarding the tx, I like to have the history of transactions, because if sometime the price shoots (like 1 BTC = 100k USD) and governs inspect money that comes from bitcoin in transactions, maybe all this transaction history counts as evidence for a tax inspection, etc.

But just to confirm there's no risk of having thousands of transactions in the future with this old wallet, right?  (Also thought about creating a new wallet and keep the old wallet for the history).