There’s nothing wrong with target date funds. If there’s a knock on them, it’s that they come with an extra layer of fees (since most are a fund of funds) and they’re really ‘one size fits most’ not ‘one size fits all.’ But if you’re contributing to a target date fund at a healthy clip, you’re probably setting yourself up for a successful retirement. I personally don’t use them because they aren’t aggressive enough for my risk tolerance. I already have a fixed income component in the form of a small pension and cash value life insurance, so I prefer my 401(k) to be 100% equities.