To speak to this a little more broadly: apart from groups like hedge funds and other investors investing for purely speculative purposes, one of the major purposes of forwards (and, for that matter, futures) for companies in the "real economy" is to "lock in" a particular price in advance (or to reduce the risk of some kind of investment or transaction).
Investopedia defines a currency forward as follows (with a few key points emphasized):
[A currency forward is] a binding contract in the foreign exchange market that locks in the exchange rate for the purchase or sale of a currency on a future date. A currency forward is essentially a hedging tool that does not involve any upfront payment. The other major benefit of a currency forward is that it can be tailored to a particular amount and delivery period, unlike standardized currency futures.
This can be a major advantage for planning and risk management purposes. For example, if I know I'm going to have to pay $1 million USD in the future and most of my revenue is in Euros, the actual amount I'll have to pay will vary based on the exchange rate between Euros and dollars. Thus, it's very worthwhile for me to be able to "lock in" a particular exchange rate so that I know exactly how much I'm going to pay relative to my projected revenue. The goal isn't necessarily to make money off the transaction (maybe they do, maybe they don't) as much as to reduce risk and improve planning ability.
The fact that it doesn't involve an up-front payment is also a major advantage. It's usually a bad practice to "sit on" cash for a year if you can avoid it.
Another key point: savings accounts pay less interest than inflation. If inflation is 3% and your savings account pays 1%, that looks remarkably like a guaranteed 2% loss to me.