You get an interactive login shell. But don't take it for granted, check it yourself.
This tells you that you have a login shell (from
# shopt | grep login
This tells you that you have an interactive shell, look for the
# echo $-
The interactive login shell you get has read
/etc/profile and than one of
~/.profile, as explained in
When bash is invoked as an interactive login shell, or as a
non-interactive shell with the --login option, it first reads and
executes commands from the file
/etc/profile, if that file exists. After reading that file, it looks for ~/.bash_profile, ~/.bash_login, and ~/.profile, in that
order, and reads and executes com‐
mands from the first one that exists and is readable. The --noprofile option may be used when the shell is started to inhibit this behavior.