Is it logical to stake dYmension?

Yes, it is logical, but!
It depends on where your DYM tokens come from, let me explain it by making distinctions:
If they are from Testnet rewards: I don't think staking all of them is logical. Regardless, it's wise to have a taste of a little bit of income, establishing a balance based on the number of tokens you'll receive.
If they are from Airdrops: Staking makes sense, as I've mentioned above, decide based on which group you belong to.
If you bought them from the market: Staking might make sense, but it's highly variable based on the purchase price. If you're buying solely for staking purposes, it might not be logical.
What will I do? I'll own DYM in three stages of certainty and one stage of possibility:
Seed: As an investor, I'll stake all tokens I bought, as they're already locked.
Rollapp Fam: I'm not planning to stake tokens received from here, at least not immediately. I'll decide based on the state of the launch after a while.
Rollapp Ape: I'll stake all tokens here since I already have quite a few to sell. You might say I have tokens staked, but those are locked, and these will be unlocked.
Rollapp top10: If I receive rewards from here, I'll discuss it on launch day.
So, about staking, you might be wondering which validators to stake with, especially you, Nuri and Hazmania, who constantly pester in the Rues chat! (Just kidding)
I don't make my validator selection and stake/unstake decisions in a single step, to be honest. I base my validator selection on if a rollapp that has made it to the top 10 in the testnet becomes a mainnet validator. I'll stake with them and also with validators associated with rollapp development, where I have extra chances of receiving airdrops.
In essence, my stake and validator selection process will be straightforward for me, given different dates and various validators that I already know how and whom to approach."
Please let me know if there's anything else you'd like to ask or if you need further assistance!