Do you think these will happen in your lifetime? Why? Why not? 3. There won't be many shops.
4. There won't be any house offices. People will generally work from home.

No, I don't think so, because the vaccination is accelerating, there will be little or no need for social distancing after a year or two. Even if the online shopping businesses are growing, shops are not going to close in near future. Shops are not just a place for selling and buying, they are also sort of a social activity. The same applies to work from home, offices are also a place for social interaction besides being a work place.

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.