Absolutely!!!
Bitcoin is one of the best assets one can have in this century. Instead of depending on fiat currency and fixed deposits, why not have Bitcoin, have gold, have a business, and many other assets available.
All these can give high returns in the long run.
Bitcoin is indeed the best among other assets in it class, and for one significant fact fhat Bitcoin have an edge against inflation makes Bitcoin the best possible asset for long term goal such as retirement, and also for the fact that having your retirement funds in Bitcoin keep your asset away from over taxation also contribute to the many success that comes with Bitcoin as retirement savings.
Since retirement has to come with long-term goals, it makes Bitcoin more suitable for that demand since Bitcoin's value and profitability are reflected in the long-term base.