Hotspot question???

For what i need hotspot server if i can manualy add DHCP server on any interface and configure mascarading for internet access????

I use /ip hotspot setup on MT 2.9.41, so, i add hotspot server on vlan1 interface:
hotspot interface: vlan1
local address of network: 14.15.15.1/24
masquerade network: yes
address pool of network: 14.15.15.2-14.15.15.254
select certificate: cert1
ip address of smtp server: 0.0.0.0
dns servers: x.x.x.x,x.x.x.x
dns name: hotspot
name of local hotspot user: admin
password for the user: 123


[admin@Router] ip hotspot> print
Flags: X - disabled, I - invalid, S - HTTPS

NAME INTERFACE ADDRESS-POOL PROFILE IDLE-TIMEOUT

0 S hotspot1 vlan1 hs-pool-58265 hsprof1 5m

after that, any computer connected to vlan1 can surf internet without any authorizations! So, what for i need hotspot, if it not authorize users???