Fairly limited benefits until you reach lifetime status. Depending on your travel patterns that could be many years away, by which time the lifetime status might not exist (grandfather existing), or require more miles to attain (e.g. 1 million), and/or have reduced benefits.

Conversely crediting to another program might get you more significant benefits in the meantime.

There is no right answer. It depends on your travel patterns, what you value from a programme (e.g. lounge access, awards, upgrades), risk tolerances (for the programmes changing), etc.