They both left at 26, one is single and 40 the other is 32 and married. The single one lives alone in a flat he owns the married one has moved back in with me due to my lack of mobility, along with his wife and young son. They own their own house but let it out so they stay on the property ladder.
The reason they stayed till 26 was so that they could save for a deposit and have their own transport etc. 26 wasn't a magic number or anything other than a coincidence.
NHS U turn on trans terminology