While standard ETFs are built for long-term investors, more complex products like leveraged, inverse, and synthetic ETFs are designed for short-term or specialized strategies and carry higher risks. Leveraged ETFs amplify daily index returns, but compounding effects mean they often underperform over longer periods, making them unsuitable for buy-and-hold investors. 

Inverse ETFs, by contrast, rise when their benchmark falls and are typically used as temporary hedges against downturns rather than core holdings.

Synthetic ETFs take a different approach by using swap agreements with banks to replicate index performance instead of directly owning the securities, which reduces tracking error but introduces counterparty risk. These advanced products can be useful in the right hands, yet they require a clear understanding of their mechanics and limitations. 

Finsum: These tools can be tactical moves, not long-term wealth building, but serve short term client desires.