Even if a house isn't right for you, you still need to save for the deposit on an apartment. You still need to buy furnishings for your apartment. You won't even know if a house is right for you until you are mid 20s to 30, so it is probably best to save for a house and if you decide at 30 it isn't right for you roll that money into retirement savings (if a house isn't right for you that means you need more retirement savings)
Relationships - even if you don't have a wedding or kids - come at the time you have those starting to get out on your own expenses. You will need to figure those out.