It's important when discussing ETH to differentiate between Ethereum the Platform and ETH the token. It seems that many investors don't understand that these are two different things.
Ethereum the platform definitely has value. It's a package that uses a blockchain (The public one generally is not used) for a database instead of more traditional databases. It might have uses where multiple companies need a common database that is decentralized for tracking purposes. These will be private blockchains; although, in some cases the public might havelimited access at a read only level. Unfortunately, when you buy ETH the token you don't own a piece of this potentially useful plateform.
ETH is a public token created by the Ethereum Platform. The ETH network has demonstrated that it is of limited use and not capable of living up to the hype. Technically, it's just not possible to run 100s of DAPPS on a decentralized system. The ETH network runs 1000s of times slower than a cell phone processor. The problem has been demonstrated during ICOs and more recently the Virtual Kittys DAPP clogging the memory pool. Imagine if several popular DAPPS being used worldwide 24/7 were developed. The ETH network would be a complete failure. We have all experienced problems with applications connected to centralized systems failing due to server load, these servers are fast and still can't keep up during peak usage. The ETH network will never keep up.
The fact is that decentralized systems are extremely slow. These types of systems might be able to do one function well; but, not multiple functions. For example they might be able to be money. It's already clear that doing a single function, like being money is difficult because of speed. That's why scaling issues exist and are such a hot topic in the cryptocurrency community.
These scaling issues suggest that multiple complementary coins will be part of the scaling solution. The solution will also include small blocksize increases within limitations of a decentralized network and second layers that use blockchains like LTC as a settlement layer.
LTC is intended to perform a single function (be money) and a single function is what a decentralized system might do well. This is a advantage as the system will not be crippled with other functions like DAPPs.
The Ethereum Platform has potential value and usefulness outside of cryptocurrency; unfortunately, that is owned and controlled by the Ethereum foundation and the public can't own a piece of that. ETH the public network isn't capable of performing multiple functions on the scale required to support multiple DAPPs. LTC as a decentralized network can perform a single function well.
Based on the above the Ethereum the Platform has potential value. ETH has little value and it's problems will continue to grow. LTC has value.