Lifetime? It's tricky since you want to consider durability and whether you can spend those easily in the future. At very least,
1. Avoid centralized exchange since they may be hacked, close their business, perform exit scam or doing shady stuff (e.g. charging fee for idle fund).
2. Whether you choose software, hardware or paper wallet, make sure to write very detailed guide and make multiple backup (including the guide).

Although looking at past decade, Bitcoin Core and Electrum may be good choice since they still active in development and have good backward compatibility.