The decision to go LTS is different for each person. My interest in the game is largely due to my love of trek. Plus I happened to have some spare change in my pocket at the right moment.
Lifetime subscription in general (not just related to STO) are often in favor of the customer and bad for the company in the long run. So when you have a chance to get in on anything with a lifetime subscription, if it's something that truly important to you, go for it.