Even today, Solidity is not the only language that you can use to build smart contracts, there is Serpent and a few more. However, if you're already a developer from any background, you can pickup Solidity pretty quickly and get a hands-on experience of Blockchain development.

Nobody can predict what technology or programming language we will be using for smart contracts after an year or two years. However, the time you spend on learning Solidity today will always be useful.

Technology evolves very quickly and it will continue to evolve rapidly in the future too. Compilers are getting developed for different languages so there is a great chance that you will be able to code contracts in your favorite language in the future.

People might not be using Solidity for smart contracts in far future but at present and in near future, Solidity is being used and will be used to code smart contracts.

Thanks for writing in.